diff --git a/addons/crm/static/tests/tours/crm_forecast_tour.js b/addons/crm/static/tests/tours/crm_forecast_tour.js
index 730c9c82ac0..27a128e99dc 100644
--- a/addons/crm/static/tests/tours/crm_forecast_tour.js
+++ b/addons/crm/static/tests/tours/crm_forecast_tour.js
@@ -57,7 +57,7 @@ tour.register('crm_forecast', {
         trigger: ".o_kanban_record .o_kanban_record_title:contains('Test Opportunity 1')",
         content: "move to the next month",
         run: function (actions) {
-            const undefined_groups = $('.o_column_title:contains("Undefined")').length;
+            const undefined_groups = $('.o_column_title:contains("None")').length;
             actions.drag_and_drop(` .o_opportunity_kanban .o_kanban_group:eq(${1 + undefined_groups})`, this.$anchor);
         }
     }, {
diff --git a/addons/web/static/src/legacy/js/views/kanban/kanban_column.js b/addons/web/static/src/legacy/js/views/kanban/kanban_column.js
index 907f23d5918..cd4cdc64c55 100644
--- a/addons/web/static/src/legacy/js/views/kanban/kanban_column.js
+++ b/addons/web/static/src/legacy/js/views/kanban/kanban_column.js
@@ -80,10 +80,12 @@ var KanbanColumn = Widget.extend({
 
         if (options.grouped_by_m2o || options.grouped_by_date || options.grouped_by_m2m) {
             // For many2x and datetime, a false value means that the field is not set.
-            this.title = value ? value : _t('Undefined');
+            this.title = value ? value : _t('None');
+        } else if (this.groupedBy && this.fields[this.groupedBy].type === 'boolean') {
+            this.title = value === undefined ? _t('None') : (value ? _t('Yes') : _t('No'));
         } else {
             // False and 0 might be valid values for these fields.
-            this.title = value === undefined ? _t('Undefined') : value;
+            this.title = value === undefined ? _t('None') : value;
         }
 
         if (options.group_by_tooltip) {
diff --git a/addons/web/static/src/legacy/js/views/list/list_renderer.js b/addons/web/static/src/legacy/js/views/list/list_renderer.js
index d1b23b58869..6e9647e6ac7 100644
--- a/addons/web/static/src/legacy/js/views/list/list_renderer.js
+++ b/addons/web/static/src/legacy/js/views/list/list_renderer.js
@@ -718,8 +718,8 @@ var ListRenderer = BasicRenderer.extend({
         const groupByFieldName = groupBy.split(':')[0];
         const groupByField = group.fields[groupByFieldName];
         const name = groupByField.type === "boolean"
-            ? (group.value === undefined ? _t('Undefined') : group.value)
-            : (group.value === undefined || group.value === false ? _t('Undefined') : group.value);
+            ? (group.value === undefined ? _t('None') : (group.value ? _t('Yes') : _t('No')))
+            : (group.value === undefined || group.value === false ? _t('None') : group.value);
         var $th = $('<th>')
             .addClass('o_group_name')
             .attr('tabindex', -1)
diff --git a/addons/web/static/src/views/pivot/pivot_model.js b/addons/web/static/src/views/pivot/pivot_model.js
index fb3b353773d..09d65276ce1 100644
--- a/addons/web/static/src/views/pivot/pivot_model.js
+++ b/addons/web/static/src/views/pivot/pivot_model.js
@@ -1516,8 +1516,17 @@ export class PivotModel extends Model {
     _sanitizeLabel(value, groupBy, config) {
         const { metaData } = config;
         const fieldName = groupBy.split(":")[0];
+        if (
+            fieldName &&
+            metaData.fields[fieldName] &&
+            metaData.fields[fieldName].type === "boolean"
+        ) {
+            return value === undefined ?
+                this.env._t('None')
+                : (value ? this.env._t('Yes') : this.env._t('No'));
+        }
         if (value === false) {
-            return this.env._t("Undefined");
+            return this.env._t("None");
         }
         if (value instanceof Array) {
             return this._getNumberedLabel(value, fieldName, config);
diff --git a/addons/web/static/tests/legacy/views/kanban_tests.js b/addons/web/static/tests/legacy/views/kanban_tests.js
index 6e48dde3e58..9c637ee51de 100644
--- a/addons/web/static/tests/legacy/views/kanban_tests.js
+++ b/addons/web/static/tests/legacy/views/kanban_tests.js
@@ -357,7 +357,7 @@ QUnit.module('Views', {
 
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group")].map(el => el.innerText.replace(/\s/g, " ")),
-            ["Undefined blork", "gold yopblip", "silver yopgnap"],
+            ["None blork", "gold yopblip", "silver yopgnap"],
         );
 
         // check archive/restore all actions in kanban header's config dropdown
@@ -5996,7 +5996,7 @@ QUnit.module('Views', {
                         "column should contain 2 record(s)");
         assert.strictEqual(kanban.$('.o_kanban_group:nth-child(3) .o_kanban_record').length, 1,
                         "column should contain 1 record(s)");
-        assert.ok(kanban.$('.o_kanban_group:first span.o_column_title:contains(Undefined)').length,
+        assert.ok(kanban.$('.o_kanban_group:first span.o_column_title:contains(None)').length,
             "first column should have a default title for when no value is provided");
         assert.ok(!kanban.$('.o_kanban_group:first .o_kanban_header_title').data('original-title'),
             "tooltip of first column should not defined, since group_by_tooltip title and the many2one field has no value");
@@ -8068,7 +8068,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8082,7 +8082,7 @@ QUnit.module('Views', {
         // Apply an active filter
         await testUtils.dom.click(kanban.el.querySelector(".o_kanban_group:nth-child(2) .progress-bar[data-filter=yop]"));
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
-        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "true");
+        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "Yes");
 
         // Add searchdomain to something restricting progressbars' values (records still in filtered group)
         await kanban.update({ domain: [["foo", "=", "yop"]] });
@@ -8090,7 +8090,7 @@ QUnit.module('Views', {
         // Check that we have now 1 column only and check its progressbar's state
         assert.containsOnce(kanban.el, ".o_kanban_group");
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
-        assert.strictEqual(kanban.el.querySelector(".o_column_title").innerText, "true");
+        assert.strictEqual(kanban.el.querySelector(".o_column_title").innerText, "Yes");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
             ["1 yop", "0 blip", "0 __false"],
@@ -8104,7 +8104,7 @@ QUnit.module('Views', {
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8147,7 +8147,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8169,7 +8169,7 @@ QUnit.module('Views', {
         // Apply an active filter
         await testUtils.dom.click(kanban.el.querySelector(".o_kanban_group:nth-child(2) .progress-bar[data-filter=yop]"));
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
-        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "true");
+        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "Yes");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group.o_kanban_group_show .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
             ["1 yop", "1 blip", "1 __false"],
@@ -8187,7 +8187,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8214,7 +8214,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8265,7 +8265,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8288,7 +8288,7 @@ QUnit.module('Views', {
         await testUtils.dom.click(kanban.el.querySelector(".o_kanban_group:nth-child(2) .progress-bar[data-filter=yop]"));
         assert.hasClass(kanban.el.querySelector(".o_kanban_group:nth-child(2)"), "o_kanban_group_show");
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
-        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "true");
+        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "Yes");
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show .o_kanban_record");
         assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_kanban_record").innerText, "1 yop");
 
@@ -8303,7 +8303,7 @@ QUnit.module('Views', {
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8358,7 +8358,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
@@ -8387,7 +8387,7 @@ QUnit.module('Views', {
         await testUtils.dom.click(kanban.el.querySelector(".o_kanban_group:nth-child(2) .progress-bar[data-filter=yop]"));
         assert.hasClass(kanban.el.querySelector(".o_kanban_group:nth-child(2)"), "o_kanban_group_show");
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show");
-        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "true");
+        assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_column_title").innerText, "Yes");
         assert.containsOnce(kanban.el, ".o_kanban_group.o_kanban_group_show .o_kanban_record");
         assert.strictEqual(kanban.el.querySelector(".o_kanban_group.o_kanban_group_show .o_kanban_record").innerText, "1 yop");
         assert.verifySteps(["/web/dataset/search_read"]);
@@ -8403,7 +8403,7 @@ QUnit.module('Views', {
         assert.containsNone(kanban.el, ".o_kanban_group.o_kanban_group_show");
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_column_title")].map(el => el.innerText),
-            ["false", "true"],
+            ["No", "Yes"],
         );
         assert.deepEqual(
             [...kanban.el.querySelectorAll(".o_kanban_group:nth-child(1) .o_kanban_counter .progress-bar")].map(el => el.dataset.originalTitle),
diff --git a/addons/web/static/tests/legacy/views/list_tests.js b/addons/web/static/tests/legacy/views/list_tests.js
index 947d9b46027..f3c763a0ab2 100644
--- a/addons/web/static/tests/legacy/views/list_tests.js
+++ b/addons/web/static/tests/legacy/views/list_tests.js
@@ -1316,7 +1316,7 @@ QUnit.module('Views', {
         assert.containsNone(list, ".o_group_open", "no group is open");
         assert.deepEqual(
             [...list.el.querySelectorAll(".o_group_header .o_group_name")].map((el) => el.innerText),
-            ["Value 1 (3)", "Value 2 (2)", "Value 3 (1)", "Undefined (1)"],
+            ["Value 1 (3)", "Value 2 (2)", "Value 3 (1)", "None (1)"],
             "should have those group headers",
         );
 
@@ -1340,7 +1340,7 @@ QUnit.module('Views', {
                 "​blipValue1Value2Value3",
                 "Value3(1)",
                 "​blipValue1Value2Value3",
-                "Undefined(1)",
+                "None(1)",
                 "​gnap"
             ],
             "should have these row contents"
@@ -9188,7 +9188,7 @@ QUnit.module('Views', {
             groupBy: ['date:month'],
         });
 
-        assert.strictEqual(list.$('tbody').text(), "January 2017 (1)Undefined (3)",
+        assert.strictEqual(list.$('tbody').text(), "January 2017 (1)None (3)",
             "the group names should be correct");
 
         list.destroy();
@@ -10981,14 +10981,14 @@ QUnit.module('Views', {
             'should focus the "Add a line" button');
         await testUtils.fields.triggerKeydown($(document.activeElement), 'down');
 
-        assert.strictEqual(document.activeElement.textContent, 'false (1)',
+        assert.strictEqual(document.activeElement.textContent, 'No (1)',
             'focus should be on second group header');
         assert.strictEqual(list.$('tr.o_data_row').length, 3,
             'should have 3 rows displayed');
         await testUtils.fields.triggerKeydown($(document.activeElement), 'enter');
         assert.strictEqual(list.$('tr.o_data_row').length, 4,
             'should have 4 rows displayed');
-        assert.strictEqual(document.activeElement.textContent, 'false (1)',
+        assert.strictEqual(document.activeElement.textContent, 'No (1)',
             'focus should still be on second group header');
 
         await testUtils.fields.triggerKeydown($(document.activeElement), 'down');
@@ -11037,12 +11037,12 @@ QUnit.module('Views', {
             'second field of first record should be focused');
 
         await testUtils.fields.triggerKeydown($(document.activeElement), 'up');
-        assert.strictEqual(document.activeElement.textContent, 'true (3)',
+        assert.strictEqual(document.activeElement.textContent, 'Yes (3)',
             'focus should be on first group header');
         await testUtils.fields.triggerKeydown($(document.activeElement), 'enter');
         assert.strictEqual(list.$('tr.o_data_row').length, 2,
             'should have 2 rows displayed (first group should be closed)');
-        assert.strictEqual(document.activeElement.textContent, 'true (3)',
+        assert.strictEqual(document.activeElement.textContent, 'Yes (3)',
             'focus should still be on first group header');
 
         assert.strictEqual(list.$('tr.o_data_row').length, 2,
@@ -11050,27 +11050,27 @@ QUnit.module('Views', {
         await testUtils.fields.triggerKeydown($(document.activeElement), 'right');
         assert.strictEqual(list.$('tr.o_data_row').length, 5,
             'should have 5 rows displayed');
-        assert.strictEqual(document.activeElement.textContent, 'true (3)',
+        assert.strictEqual(document.activeElement.textContent, 'Yes (3)',
             'focus is still in header');
         await testUtils.fields.triggerKeydown($(document.activeElement), 'right');
         assert.strictEqual(list.$('tr.o_data_row').length, 5,
             'should have 5 rows displayed');
-        assert.strictEqual(document.activeElement.textContent, 'true (3)',
+        assert.strictEqual(document.activeElement.textContent, 'Yes (3)',
             'focus is still in header');
 
         await testUtils.fields.triggerKeydown($(document.activeElement), 'left');
         assert.strictEqual(list.$('tr.o_data_row').length, 2,
             'should have 2 rows displayed');
-        assert.strictEqual(document.activeElement.textContent, 'true (3)',
+        assert.strictEqual(document.activeElement.textContent, 'Yes (3)',
             'focus is still in header');
         await testUtils.fields.triggerKeydown($(document.activeElement), 'left');
         assert.strictEqual(list.$('tr.o_data_row').length, 2,
             'should have 2 rows displayed');
-        assert.strictEqual(document.activeElement.textContent, 'true (3)',
+        assert.strictEqual(document.activeElement.textContent, 'Yes (3)',
             'focus is still in header');
 
         await testUtils.fields.triggerKeydown($(document.activeElement), 'down');
-        assert.strictEqual(document.activeElement.textContent, 'false (2)',
+        assert.strictEqual(document.activeElement.textContent, 'No (2)',
             'focus should now be on second group header');
         await testUtils.fields.triggerKeydown($(document.activeElement), 'down');
         assert.strictEqual(document.activeElement.tagName, 'TD',
@@ -11188,7 +11188,7 @@ QUnit.module('Views', {
         assert.containsOnce(list, 'tbody:nth(3) .o_data_row');
 
         await testUtils.dom.click(list.$('.o_group_field_row_add a:eq(1)')); // create row in second group
-        assert.strictEqual(list.$('.o_group_name:eq(1)').text(), 'false (2)',
+        assert.strictEqual(list.$('.o_group_name:eq(1)').text(), 'No (2)',
             "group should have correct name and count");
         assert.containsN(list, 'tbody:nth(3) .o_data_row', 2);
         assert.hasClass(list.$('.o_data_row:nth(3)'), 'o_selected_row');
diff --git a/addons/web/static/tests/views/pivot_view_tests.js b/addons/web/static/tests/views/pivot_view_tests.js
index 2ca8c08afa5..73a5ea14baa 100644
--- a/addons/web/static/tests/views/pivot_view_tests.js
+++ b/addons/web/static/tests/views/pivot_view_tests.js
@@ -2102,7 +2102,7 @@ QUnit.module("Views", (hooks) => {
         await toggleMenuItem(webClient, "Bar");
         assert.strictEqual(
             webClient.el.querySelector("tbody .o_pivot_header_cell_closed").textContent,
-            "true"
+            "Yes"
         );
 
         // remove filter
@@ -2110,7 +2110,7 @@ QUnit.module("Views", (hooks) => {
 
         assert.strictEqual(
             webClient.el.querySelector("tbody .o_pivot_header_cell_closed").textContent,
-            "true"
+            "Yes"
         );
     });
 
@@ -2155,7 +2155,7 @@ QUnit.module("Views", (hooks) => {
         await toggleMenuItem(webClient, "Bar");
         assert.strictEqual(
             webClient.el.querySelector("tbody .o_pivot_header_cell_closed").textContent,
-            "true"
+            "Yes"
         );
 
         // remove groupBy
@@ -2280,7 +2280,7 @@ QUnit.module("Views", (hooks) => {
 
             assert.strictEqual(
                 webClient.el.querySelector("thead .o_pivot_header_cell_closed").textContent,
-                "true"
+                "Yes"
             );
 
             // desactivate the unique existing favorite
@@ -2293,7 +2293,7 @@ QUnit.module("Views", (hooks) => {
 
             assert.strictEqual(
                 webClient.el.querySelector("thead .o_pivot_header_cell_closed").textContent,
-                "true"
+                "Yes"
             );
 
             // Let's get rid of the rows and columns groupBy
@@ -2321,7 +2321,7 @@ QUnit.module("Views", (hooks) => {
 
             assert.strictEqual(
                 webClient.el.querySelector("thead .o_pivot_header_cell_closed").textContent,
-                "true"
+                "Yes"
             );
         }
     );
@@ -4448,7 +4448,7 @@ QUnit.module("Views", (hooks) => {
             };
             serverData.models.partner.records[0].favorite_animal = "Dog";
             serverData.models.partner.records[1].favorite_animal = "false";
-            serverData.models.partner.records[2].favorite_animal = "Undefined";
+            serverData.models.partner.records[2].favorite_animal = "None";
 
             patchDate(2016, 11, 20, 1, 0, 0);
             const pivot = await makeView({
@@ -4468,7 +4468,7 @@ QUnit.module("Views", (hooks) => {
             );
             assert.deepEqual(
                 [...pivot.el.querySelectorAll("tbody th")].map((th) => th.innerText),
-                ["Total", "Dog", "false", "Undefined", "Undefined"],
+                ["Total", "Dog", "false", "None", "None"],
                 "The row headers should be as expected"
             );
         }
@@ -4545,7 +4545,7 @@ QUnit.module("Views", (hooks) => {
             );
             assert.deepEqual(
                 [...pivot.el.querySelectorAll("tbody th")].map((th) => th.innerText),
-                ["Total", "Company", "true", "individual", "true", "Undefined"],
+                ["Total", "Company", "Yes", "individual", "Yes", "No"],
                 "The row headers should be as expected"
             );
         }