diff --git a/packages/main/cypress/specs/Menu.cy.tsx b/packages/main/cypress/specs/Menu.cy.tsx
index 68434210afc1..b3c4d3d3836d 100644
--- a/packages/main/cypress/specs/Menu.cy.tsx
+++ b/packages/main/cypress/specs/Menu.cy.tsx
@@ -1199,6 +1199,71 @@ describe("Menu interaction", () => {
 
 			cy.get("@items").last().should("be.focused");
 		});
+
+		it("Menu items have correct aria-posinset and aria-setsize", () => {
+			cy.mount(
+				<>
+					<Button id="btnOpen">Open Menu</Button>
+					<Menu opener="btnOpen">
+						<MenuItem text="Item 1" icon={openFolder}>
+							<MenuItem text="Sub 1.1"></MenuItem>
+							<MenuItem text="Sub 1.2"></MenuItem>
+						</MenuItem>
+						<MenuItem text="Item 2"></MenuItem>
+						<MenuItem text="Item 3"></MenuItem>
+					</Menu>
+				</>
+			);
+
+			cy.get("[ui5-menu]")
+				.ui5MenuOpen();
+
+			cy.get("[ui5-menu] > [ui5-menu-item]")
+				.as("items");
+
+			cy.get("@items")
+				.eq(0)
+				.shadow()
+				.find("li")
+				.should("have.attr", "aria-posinset", "1")
+				.and("have.attr", "aria-setsize", "3");
+
+			cy.get("@items")
+				.eq(1)
+				.shadow()
+				.find("li")
+				.should("have.attr", "aria-posinset", "2")
+				.and("have.attr", "aria-setsize", "3");
+
+			cy.get("@items")
+				.eq(2)
+				.shadow()
+				.find("li")
+				.should("have.attr", "aria-posinset", "3")
+				.and("have.attr", "aria-setsize", "3");
+
+			// Open sub-menu and verify sub-items
+			cy.get("@items")
+				.eq(0)
+				.ui5MenuItemClick();
+
+			cy.get("[ui5-menu-item][text='Item 1'] > [ui5-menu-item]")
+				.as("subItems");
+
+			cy.get("@subItems")
+				.eq(0)
+				.shadow()
+				.find("li")
+				.should("have.attr", "aria-posinset", "1")
+				.and("have.attr", "aria-setsize", "2");
+
+			cy.get("@subItems")
+				.eq(1)
+				.shadow()
+				.find("li")
+				.should("have.attr", "aria-posinset", "2")
+				.and("have.attr", "aria-setsize", "2");
+		});
 	});
 });
 
diff --git a/packages/main/src/Menu.ts b/packages/main/src/Menu.ts
index 0c9da93d0a80..90c841fcc470 100644
--- a/packages/main/src/Menu.ts
+++ b/packages/main/src/Menu.ts
@@ -337,12 +337,19 @@ class Menu extends UI5Element {
 	}
 
 	onBeforeRendering() {
-		const siblingsWithIcon = this._allMenuItems.some(menuItem => !!menuItem.icon);
+		const menuItems = this._allMenuItems;
+		const siblingsWithIcon = menuItems.some(menuItem => !!menuItem.icon);
+		const setsize = menuItems.length;
 
 		this._setupItemNavigation();
 
-		this._allMenuItems.forEach(item => {
+		menuItems.forEach((item, index) => {
 			item._siblingsWithIcon = siblingsWithIcon;
+			item.accessibilityAttributes = {
+				...item.accessibilityAttributes,
+				ariaPosinset: index + 1,
+				ariaSetsize: setsize,
+			};
 		});
 	}
 
diff --git a/packages/main/src/MenuItem.ts b/packages/main/src/MenuItem.ts
index c8b2b9654c5b..86300574dbcf 100644
--- a/packages/main/src/MenuItem.ts
+++ b/packages/main/src/MenuItem.ts
@@ -435,12 +435,19 @@ class MenuItem extends ListItem implements IMenuItem {
 	onBeforeRendering() {
 		super.onBeforeRendering();
 
-		const siblingsWithIcon = this._allMenuItems.some(menuItem => !!menuItem.icon);
+		const menuItems = this._allMenuItems;
+		const siblingsWithIcon = menuItems.some(menuItem => !!menuItem.icon);
+		const setsize = menuItems.length;
 
 		this._setupItemNavigation();
 
-		this._allMenuItems.forEach(item => {
+		menuItems.forEach((item, index) => {
 			item._siblingsWithIcon = siblingsWithIcon;
+			item.accessibilityAttributes = {
+				...item.accessibilityAttributes,
+				ariaPosinset: index + 1,
+				ariaSetsize: setsize,
+			};
 		});
 	}