diff --git a/addons/web/static/src/webclient/actions/action_service.js b/addons/web/static/src/webclient/actions/action_service.js
index ab5cf6b5f77..f650a128059 100644
--- a/addons/web/static/src/webclient/actions/action_service.js
+++ b/addons/web/static/src/webclient/actions/action_service.js
@@ -22,7 +22,7 @@ const viewRegistry = registry.category("views");
 
 /** @typedef {number|false} ActionId */
 /** @typedef {Object} ActionDescription */
-/** @typedef {"current" | "fullscreen" | "new" | "self" | "inline"} ActionMode */
+/** @typedef {"current" | "fullscreen" | "new" | "main" | "self" | "inline"} ActionMode */
 /** @typedef {string} ActionTag */
 /** @typedef {string} ActionXMLId */
 /** @typedef {Object} Context */
@@ -1118,6 +1118,7 @@ function makeActionManager(env) {
         const actionProm = _loadAction(actionRequest, options.additionalContext);
         let action = await keepLast.add(actionProm);
         action = _preprocessAction(action, options.additionalContext);
+        options.clearBreadcrumbs = action.target === "main" || options.clearBreadcrumbs;
         switch (action.type) {
             case "ir.actions.act_url":
                 return _executeActURLAction(action, options);
diff --git a/addons/web/static/tests/webclient/actions/target_tests.js b/addons/web/static/tests/webclient/actions/target_tests.js
index c45abca63db..56118828b39 100644
--- a/addons/web/static/tests/webclient/actions/target_tests.js
+++ b/addons/web/static/tests/webclient/actions/target_tests.js
@@ -403,6 +403,7 @@ QUnit.module("ActionManager", (hooks) => {
     });
 
     QUnit.module('Actions in target="inline"');
+
     QUnit.test(
         'form views for actions in target="inline" open in edit mode',
         async function (assert) {
@@ -523,4 +524,110 @@ QUnit.module("ActionManager", (hooks) => {
             assert.strictEqual($(target).find("nav .o_menu_brand").text(), "MAIN APP");
         }
     );
+
+    QUnit.module('Actions in target="main"');
+
+    QUnit.test('can execute act_window actions in target="main"', async function (assert) {
+        const webClient = await createWebClient({ serverData });
+        await doAction(webClient, 1);
+
+        assert.containsOnce(target, ".o_kanban_view");
+        assert.containsOnce(target, ".breadcrumb-item");
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Partners Action 1"
+        );
+
+        await doAction(webClient, {
+            name: "Another Partner Action",
+            res_model: "partner",
+            type: "ir.actions.act_window",
+            views: [[false, "list"]],
+            target: "main",
+        });
+
+        assert.containsOnce(target, ".o_list_view");
+        assert.containsOnce(target, ".breadcrumb-item");
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Another Partner Action"
+        );
+    });
+
+    QUnit.test('can switch view in an action in target="main"', async function (assert) {
+        const webClient = await createWebClient({ serverData });
+        await doAction(webClient, {
+            name: "Partner Action",
+            res_model: "partner",
+            type: "ir.actions.act_window",
+            views: [
+                [false, "list"],
+                [false, "form"],
+            ],
+            target: "main",
+        });
+
+        assert.containsOnce(target, ".o_list_view");
+        assert.containsOnce(target, ".breadcrumb-item");
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Partner Action"
+        );
+
+        // open first record
+        await click(target.querySelector(".o_data_row .o_data_cell"));
+        await legacyExtraNextTick();
+
+        assert.containsOnce(target, ".o_form_view");
+        assert.containsN(target, ".breadcrumb-item", 2);
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Partner ActionFirst record"
+        );
+    });
+
+    QUnit.test('can restore an action in target="main"', async function (assert) {
+        const webClient = await createWebClient({ serverData });
+        await doAction(webClient, {
+            name: "Partner Action",
+            res_model: "partner",
+            type: "ir.actions.act_window",
+            views: [
+                [false, "list"],
+                [false, "form"],
+            ],
+            target: "main",
+        });
+
+        assert.containsOnce(target, ".o_list_view");
+        assert.containsOnce(target, ".breadcrumb-item");
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Partner Action"
+        );
+
+        // open first record
+        await click(target.querySelector(".o_data_row .o_data_cell"));
+        await legacyExtraNextTick();
+        assert.containsOnce(target, ".o_form_view");
+        assert.containsN(target, ".breadcrumb-item", 2);
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Partner ActionFirst record"
+        );
+
+        await doAction(webClient, 1);
+        assert.containsOnce(target, ".o_kanban_view");
+        assert.containsN(target, ".breadcrumb-item", 3);
+
+        // go back to form view
+        await click(target.querySelectorAll(".breadcrumb-item")[1]);
+        await legacyExtraNextTick();
+        assert.containsOnce(target, ".o_form_view");
+        assert.containsN(target, ".breadcrumb-item", 2);
+        assert.strictEqual(
+            target.querySelector(".o_control_panel .breadcrumb").textContent,
+            "Partner ActionFirst record"
+        );
+    });
 });