diff --git a/packages/main/cypress/specs/Select.cy.tsx b/packages/main/cypress/specs/Select.cy.tsx
index 4ad8461ea70f..82424f905102 100644
--- a/packages/main/cypress/specs/Select.cy.tsx
+++ b/packages/main/cypress/specs/Select.cy.tsx
@@ -443,6 +443,76 @@ describe("Select - Accessibility", () => {
 			.find("#accessibleDescription")
 			.should("have.text", "First description Updated second description Third description");
 	});
+
+	it("should not display tooltip when Select is not readonly", () => {
+		cy.mount(
+			<Select style="width: 50px">
+				<Option selected>VeryLongOptionTextThatWillBeTruncated</Option>
+				<Option >Short</Option>
+			</Select>
+		);
+
+		cy.get("[ui5-select]")
+			.shadow()
+			.find(".ui5-select-root")
+			.should("not.have.attr", "title");
+	});
+
+	it("should display user tooltip with precedence over the default tooltip", () => {
+		cy.mount(
+			<Select style="width: 50px" tooltip="Custom tooltip" readonly>
+				<Option selected>VeryLongOptionTextThatWillBeTruncated</Option>
+				<Option >Short</Option>
+			</Select>
+		);
+
+		cy.get("[ui5-select]")
+			.shadow()
+			.find(".ui5-select-root")
+			.should("have.attr", "title", "Custom tooltip");
+	});
+
+	it("should display default tooltip (text + additionalText) if it is read-only and text is truncated, even if tooltip is not set", () => {
+		cy.mount(
+			<Select style="width: 50px" readonly>
+				<Option additionalText="AdditionalInfo" selected>VeryLongOptionText</Option>
+				<Option >Short</Option>
+			</Select>
+		);
+
+		cy.get("[ui5-select]")
+			.shadow()
+			.find(".ui5-select-root")
+			.should("have.attr", "title", "VeryLongOptionText – AdditionalInfo");
+	});
+
+	it("should display default tooltip (text) if it is read-only and text is truncated, even if tooltip is not set", () => {
+		cy.mount(
+			<Select style="width: 50px" readonly>
+				<Option selected>VeryLongOptionTextThatWillBeTruncated</Option>
+				<Option >Short</Option>
+			</Select>
+		);
+
+		cy.get("[ui5-select]")
+			.shadow()
+			.find(".ui5-select-root")
+			.should("have.attr", "title", "VeryLongOptionTextThatWillBeTruncated");
+	});
+
+	it("should show the text and additionalText, separated by '-' when select is read-only", () => {
+		cy.mount(
+			<Select readonly>
+				<Option additionalText="ExtraInfo" selected>SelectedOption</Option>
+				<Option additionalText="OtherInfo">OtherOption</Option>
+			</Select>
+		);
+
+		cy.get("[ui5-select]")
+			.shadow()
+			.find(".ui5-select-label-root")
+			.should("contain.text", "SelectedOption – ExtraInfo");
+	});
 });
 
 describe("Select - Popover", () => {
@@ -489,6 +559,20 @@ describe("Select - Properties", () => {
 
 		cy.get("[ui5-select]").should("have.prop", "formFormattedValue", "");
 	});
+
+	it("Should show the selected two-column-separator when select is read-only", () => {
+		cy.mount(
+			<Select readonly two-column-separator="VerticalLine">
+				<Option additionalText="Additional1" selected>First</Option>
+				<Option additionalText="Additional2">Second</Option>
+			</Select>
+		);
+
+		cy.get("[ui5-select]")
+			.shadow()
+			.find(".ui5-select-label-root")
+			.should("contain.text", " | ");
+	});
 });
 
 describe("Select - Validation", () => {
diff --git a/packages/main/src/Select.ts b/packages/main/src/Select.ts
index 66693a37ffe5..7e4a33f6af9a 100644
--- a/packages/main/src/Select.ts
+++ b/packages/main/src/Select.ts
@@ -26,6 +26,7 @@ import {
 	getEffectiveAriaDescriptionText,
 } from "@ui5/webcomponents-base/dist/util/AccessibilityTextsHelper.js";
 import ValueState from "@ui5/webcomponents-base/dist/types/ValueState.js";
+import SelectTwoColumnSeparator from "./types/SelectTwoColumnSeparator.js";
 import "@ui5/webcomponents-icons/dist/error.js";
 import "@ui5/webcomponents-icons/dist/alert.js";
 import "@ui5/webcomponents-icons/dist/sys-enter-2.js";
@@ -337,6 +338,16 @@ class Select extends UI5Element implements IFormInputElement {
 	@property()
 	tooltip?: string;
 
+	/**
+	 * Defines the separator type for the two columns layout when Select is in read-only mode.
+	 *
+	 * @default "Dash"
+	 * @public
+	 * @since 2.15.0
+	 */
+	@property()
+	twoColumnSeparator: `${SelectTwoColumnSeparator}` = "Dash";
+
 	/**
 	 * Constantly updated value of texts collected from the associated description texts
 	 * @private
@@ -582,8 +593,69 @@ class Select extends UI5Element implements IFormInputElement {
 		return this.options.find(option => option.selected);
 	}
 
-	get text() {
-		return this.selectedOption?.effectiveDisplayText;
+	/**
+	 * Helper function to build display text with separator when additional text exists
+	 * @param mainText - The main text content
+	 * @param additionalText - The additional text (optional)
+	 * @returns The combined text with separator if additionalText exists, otherwise just mainText
+	 * @private
+	 */
+	_buildDisplayText(mainText: string, additionalText?: string) {
+		if (!additionalText) {
+			return mainText;
+		}
+
+		return `${mainText} ${this._separatorSymbol} ${additionalText}`;
+	}
+
+	get text(): string {
+		const selectedOption = this.selectedOption;
+		if (!selectedOption) {
+			return "";
+		}
+
+		// Only show separator when readonly and there's additional text
+		if (this.readonly && selectedOption.additionalText) {
+			return this._buildDisplayText(
+				selectedOption.effectiveDisplayText,
+				selectedOption.additionalText,
+			);
+		}
+
+		return selectedOption.effectiveDisplayText;
+	}
+
+	get _effectiveTooltip(): string | undefined {
+		// User-defined tooltip takes precedence
+		if (this.tooltip) {
+			return this.tooltip;
+		}
+
+		// Provide default tooltip for readonly mode to show full content
+		if (this.readonly) {
+			const selectedOption = this.selectedOption;
+			if (!selectedOption) {
+				return undefined;
+			}
+
+			// Use textContent for tooltip to show actual text content, not display text
+			const mainText = selectedOption.textContent || "";
+			return this._buildDisplayText(mainText, selectedOption.additionalText);
+		}
+
+		return undefined;
+	}
+
+	get _separatorSymbol(): string {
+		switch (this.twoColumnSeparator) {
+		case SelectTwoColumnSeparator.Bullet:
+			return "·"; // Middle dot (U+00B7)
+		case SelectTwoColumnSeparator.VerticalLine:
+			return "|"; // Vertical line (U+007C)
+		case SelectTwoColumnSeparator.Dash:
+		default:
+			return "–"; // En dash (U+2013)
+		}
 	}
 
 	_toggleRespPopover() {
diff --git a/packages/main/src/SelectTemplate.tsx b/packages/main/src/SelectTemplate.tsx
index df81b7277eb0..c0ed1fb24c7c 100644
--- a/packages/main/src/SelectTemplate.tsx
+++ b/packages/main/src/SelectTemplate.tsx
@@ -13,7 +13,7 @@ export default function SelectTemplate(this: Select) {
 				}}
 				id={`${this._id}-select`}
 				onClick={this._onclick}
-				title={this.tooltip}
+				title={this._effectiveTooltip}
 			>
 				{!this.icon && this.selectedOptionIcon &&
 					<Icon
diff --git a/packages/main/src/types/SelectTwoColumnSeparator.ts b/packages/main/src/types/SelectTwoColumnSeparator.ts
new file mode 100644
index 000000000000..25286c1a1254
--- /dev/null
+++ b/packages/main/src/types/SelectTwoColumnSeparator.ts
@@ -0,0 +1,25 @@
+/**
+ * Defines the separator types for Select component two-column layout.
+ * @public
+ */
+enum SelectTwoColumnSeparator {
+	/**
+	 * Will show bullet(·) as separator on two columns layout when Select is in read-only mode.
+	 * @public
+	 */
+	Bullet = "Bullet",
+
+	/**
+	 *	Will show N-dash(–) as separator on two columns layout when Select is in read-only mode.
+	 * @public
+	 */
+	Dash = "Dash",
+
+	/**
+	 * 	Will show vertical line(|) as separator on two columns layout when Select is in read-only mode.
+	 * @public
+	 */
+	VerticalLine = "VerticalLine",
+}
+
+export default SelectTwoColumnSeparator;
diff --git a/packages/main/test/pages/Select.html b/packages/main/test/pages/Select.html
index 18b930d0ea2d..ab524a8ae886 100644
--- a/packages/main/test/pages/Select.html
+++ b/packages/main/test/pages/Select.html
@@ -300,6 +300,30 @@ <h2>icon prop</h2>
 			<ui5-button id="btnCheckFormValidity">Check Validity</ui5-button>
 		</form>
 	</section>
+
+	<section>
+		<h3>Separator configuration</h3>
+		<div>
+			<span>Two column separator:</span>
+			<ui5-select id="selectSeparators">
+				<ui5-option selected>Dash</ui5-option>
+				<ui5-option>Bullet</ui5-option>
+				<ui5-option>VerticalLine</ui5-option>
+			</ui5-select>
+		</div>
+
+		<div style="display: flex; align-items: center; gap: 16px; margin-bottom: 16px;">
+			<span>Read-only:</span>
+			<ui5-switch id="editableSwitch" checked text-on="Yes" text-off="No"></ui5-switch>
+		</div>
+
+		<ui5-select id="selectWithSeparator" readonly="false" two-column-separator="VerticalLine">
+			<ui5-option additional-text="DZ">Algeria</ui5-option>
+			<ui5-option selected additional-text="AR">Argentina</ui5-option>
+			<ui5-option additional-text="AU">Australia</ui5-option>
+		</ui5-select>
+	</section>
+
 </body>
 <script>
 	var countries =  [{ key: "Aus", text: "Australia" }, { key: "Aruba", text: "Aruba" }, { key: "Antigua", text: "Antigua and Barbuda" }, { key: "Bel", text: "Belgium" }, { key: "Bg", text: "Bulgaria" }, { key: "Bra", text: "Brazil" }];
@@ -446,5 +470,26 @@ <h2>icon prop</h2>
 		formValidationMessage.innerText = `checkValidity(): ${isValid} ${delayed ? '( Delayed check )' : ''}`;
 		formValidationMessage.design = isValid ? "Positive" : "Negative";
 	}
+
+	document.addEventListener('DOMContentLoaded', function() {
+		const selectSeparators = document.getElementById('selectSeparators');
+		const selectWithSeparator = document.getElementById('selectWithSeparator');
+		const editableSwitch = document.getElementById('editableSwitch');
+
+		selectSeparators.addEventListener('ui5-change', function(e) {
+			const selectedSeparator = e.detail.selectedOption.textContent;
+			selectWithSeparator.setAttribute('two-column-separator', selectedSeparator);
+		});
+
+		editableSwitch.addEventListener('ui5-change', function(e) {
+			const isChecked = e.target.checked;
+
+			if (isChecked) {
+				selectWithSeparator.readonly = true;
+			} else {
+				selectWithSeparator.readonly = false;
+			}
+		});
+	});
 </script>
 </html>
\ No newline at end of file