diff --git a/core/src/components/radio-group/radio-group.tsx b/core/src/components/radio-group/radio-group.tsx
index c3e1e4c0b0e..e3c079c73c0 100644
--- a/core/src/components/radio-group/radio-group.tsx
+++ b/core/src/components/radio-group/radio-group.tsx
@@ -212,8 +212,8 @@ export class RadioGroup implements ComponentInterface {
       }
 
       // Update the radio group value when a user presses the
-      // space bar on top of a selected radio
-      if ([' '].includes(ev.key)) {
+      // enter or space bar on top of a selected radio
+      if (['Enter', ' '].includes(ev.key)) {
         const previousValue = this.value;
         this.value = this.allowEmptySelection && this.value !== undefined ? undefined : current.value;
         if (previousValue !== this.value || this.allowEmptySelection) {
diff --git a/core/src/components/radio-group/test/basic/radio-group.e2e.ts b/core/src/components/radio-group/test/basic/radio-group.e2e.ts
index 96b7b5d9556..6ddc2abdd3e 100644
--- a/core/src/components/radio-group/test/basic/radio-group.e2e.ts
+++ b/core/src/components/radio-group/test/basic/radio-group.e2e.ts
@@ -26,7 +26,7 @@ configs({ modes: ['ios'], directions: ['ltr'] }).forEach(({ title, config }) =>
         config
       );
 
-      await radioFixture.checkRadio('keyboard');
+      await radioFixture.checkRadio({ method: 'keyboard', key: 'Space' });
       await radioFixture.expectChecked(true);
     });
 
@@ -42,7 +42,39 @@ configs({ modes: ['ios'], directions: ['ltr'] }).forEach(({ title, config }) =>
         config
       );
 
-      await radioFixture.checkRadio('keyboard');
+      await radioFixture.checkRadio({ method: 'keyboard', key: 'Space' });
+      await radioFixture.expectChecked(false);
+    });
+
+    test('enter should not deselect without allowEmptySelection', async ({ page }) => {
+      await page.setContent(
+        `
+        <ion-radio-group value="one" allow-empty-selection="false">
+          <ion-item>
+            <ion-radio id="one" value="one">One</ion-radio>
+          </ion-item>
+        </ion-radio-group>
+      `,
+        config
+      );
+
+      await radioFixture.checkRadio({ method: 'keyboard', key: 'Enter' });
+      await radioFixture.expectChecked(true);
+    });
+
+    test('enter should deselect with allowEmptySelection', async ({ page }) => {
+      await page.setContent(
+        `
+        <ion-radio-group value="one" allow-empty-selection="true">
+          <ion-item>
+            <ion-radio id="one" value="one">One</ion-radio>
+          </ion-item>
+        </ion-radio-group>
+      `,
+        config
+      );
+
+      await radioFixture.checkRadio({ method: 'keyboard', key: 'Enter' });
       await radioFixture.expectChecked(false);
     });
 
@@ -58,7 +90,7 @@ configs({ modes: ['ios'], directions: ['ltr'] }).forEach(({ title, config }) =>
         config
       );
 
-      await radioFixture.checkRadio('mouse');
+      await radioFixture.checkRadio({ method: 'mouse' });
       await radioFixture.expectChecked(true);
     });
 
@@ -74,7 +106,7 @@ configs({ modes: ['ios'], directions: ['ltr'] }).forEach(({ title, config }) =>
         config
       );
 
-      await radioFixture.checkRadio('mouse');
+      await radioFixture.checkRadio({ method: 'mouse' });
       await radioFixture.expectChecked(false);
     });
 
diff --git a/core/src/components/radio-group/test/fixtures.ts b/core/src/components/radio-group/test/fixtures.ts
index 21722126d7f..b1002a4971f 100644
--- a/core/src/components/radio-group/test/fixtures.ts
+++ b/core/src/components/radio-group/test/fixtures.ts
@@ -2,6 +2,19 @@ import type { Locator } from '@playwright/test';
 import { expect } from '@playwright/test';
 import type { E2EPage } from '@utils/test/playwright';
 
+interface CheckRadioKeyboardOptions {
+  method: 'keyboard';
+  key: 'Space' | 'Enter';
+  selector?: string;
+}
+
+interface CheckRadioMouseOptions {
+  method: 'mouse';
+  selector?: string;
+}
+
+type CheckRadioOptions = CheckRadioKeyboardOptions | CheckRadioMouseOptions;
+
 export class RadioFixture {
   readonly page: E2EPage;
 
@@ -11,13 +24,14 @@ export class RadioFixture {
     this.page = page;
   }
 
-  async checkRadio(method: 'keyboard' | 'mouse', selector = 'ion-radio') {
+  async checkRadio(options: CheckRadioOptions) {
     const { page } = this;
+    const selector = options.selector ?? 'ion-radio';
     const radio = (this.radio = page.locator(selector));
 
-    if (method === 'keyboard') {
+    if (options.method === 'keyboard') {
       await radio.focus();
-      await page.keyboard.press('Space');
+      await page.keyboard.press(options.key);
     } else {
       await radio.click();
     }
diff --git a/core/src/components/radio-group/test/search/radio-group.e2e.ts b/core/src/components/radio-group/test/search/radio-group.e2e.ts
index 121acd4cd6a..4af2b46450e 100644
--- a/core/src/components/radio-group/test/search/radio-group.e2e.ts
+++ b/core/src/components/radio-group/test/search/radio-group.e2e.ts
@@ -17,7 +17,7 @@ configs({ modes: ['ios'], directions: ['ltr'] }).forEach(({ title, config }) =>
       const searchbarInput = page.locator('ion-searchbar input');
 
       // select radio
-      const radio = await radioFixture.checkRadio('mouse', 'ion-radio[value=two]');
+      const radio = await radioFixture.checkRadio({ method: 'mouse', selector: 'ion-radio[value=two]' });
       await radioFixture.expectChecked(true);
 
       // filter radio so it is not in DOM
diff --git a/core/src/components/select-modal/select-modal.tsx b/core/src/components/select-modal/select-modal.tsx
index 5925d209640..c718dd5d629 100644
--- a/core/src/components/select-modal/select-modal.tsx
+++ b/core/src/components/select-modal/select-modal.tsx
@@ -94,12 +94,20 @@ export class SelectModal implements ComponentInterface {
               justify="start"
               labelPlacement="end"
               onClick={() => this.closeModal()}
+              onKeyDown={(ev) => {
+                if (ev.key === 'Enter') {
+                  /**
+                   * Selecting a radio option with keyboard navigation,
+                   * Enter key should dismiss the modal.
+                   */
+                  this.closeModal();
+                }
+              }}
               onKeyUp={(ev) => {
                 if (ev.key === ' ') {
                   /**
                    * Selecting a radio option with keyboard navigation,
-                   * either through the Enter or Space keys, should
-                   * dismiss the modal.
+                   * Space key should dismiss the modal.
                    */
                   this.closeModal();
                 }
diff --git a/core/src/components/select-modal/test/basic/select-modal.e2e.ts b/core/src/components/select-modal/test/basic/select-modal.e2e.ts
index 126082712c3..8ea21183d88 100644
--- a/core/src/components/select-modal/test/basic/select-modal.e2e.ts
+++ b/core/src/components/select-modal/test/basic/select-modal.e2e.ts
@@ -64,6 +64,24 @@ configs({ modes: ['md'], directions: ['ltr'] }).forEach(({ title, config }) => {
         await expect(selectModalPage.modal).not.toBeVisible();
       });
 
+      test('pressing Enter on an unselected option should dismiss the modal', async () => {
+        await selectModalPage.setup(config, options, false);
+
+        await selectModalPage.pressEnterOnOption('apple');
+        await selectModalPage.ionModalDidDismiss.next();
+        await expect(selectModalPage.modal).not.toBeVisible();
+      });
+
+      test('pressing Enter on a selected option should dismiss the modal', async ({ browserName }) => {
+        test.skip(browserName === 'firefox', 'Same behavior as ROU-5437');
+
+        await selectModalPage.setup(config, checkedOptions, false);
+
+        await selectModalPage.pressEnterOnOption('apple');
+        await selectModalPage.ionModalDidDismiss.next();
+        await expect(selectModalPage.modal).not.toBeVisible();
+      });
+
       test('clicking the close button should dismiss the modal', async () => {
         await selectModalPage.setup(config, options, false);
 
diff --git a/core/src/components/select-modal/test/fixtures.ts b/core/src/components/select-modal/test/fixtures.ts
index 2058848aa84..e1df642c78b 100644
--- a/core/src/components/select-modal/test/fixtures.ts
+++ b/core/src/components/select-modal/test/fixtures.ts
@@ -63,6 +63,11 @@ export class SelectModalPage {
     await option.press('Space');
   }
 
+  async pressEnterOnOption(value: string) {
+    const option = this.getOption(value);
+    await option.press('Enter');
+  }
+
   private getOption(value: string) {
     const { multiple, selectModal } = this;
     const selector = multiple ? 'ion-checkbox' : 'ion-radio';
diff --git a/core/src/components/select-popover/select-popover.tsx b/core/src/components/select-popover/select-popover.tsx
index 00a8ccf6f2e..0ad36ee1ebd 100644
--- a/core/src/components/select-popover/select-popover.tsx
+++ b/core/src/components/select-popover/select-popover.tsx
@@ -159,12 +159,20 @@ export class SelectPopover implements ComponentInterface {
               value={option.value}
               disabled={option.disabled}
               onClick={() => this.dismissParentPopover()}
+              onKeyDown={(ev) => {
+                if (ev.key === 'Enter') {
+                  /**
+                   * Selecting a radio option with keyboard navigation,
+                   * Enter key should dismiss the popover.
+                   */
+                  this.dismissParentPopover();
+                }
+              }}
               onKeyUp={(ev) => {
                 if (ev.key === ' ') {
                   /**
                    * Selecting a radio option with keyboard navigation,
-                   * either through the Enter or Space keys, should
-                   * dismiss the popover.
+                   * Space key should dismiss the popover.
                    */
                   this.dismissParentPopover();
                 }
diff --git a/core/src/components/select-popover/test/basic/select-popover.e2e.ts b/core/src/components/select-popover/test/basic/select-popover.e2e.ts
index 14cc0c0c146..b333d5a8fca 100644
--- a/core/src/components/select-popover/test/basic/select-popover.e2e.ts
+++ b/core/src/components/select-popover/test/basic/select-popover.e2e.ts
@@ -63,6 +63,24 @@ configs({ modes: ['md'], directions: ['ltr'] }).forEach(({ title, config }) => {
         await selectPopoverPage.ionPopoverDidDismiss.next();
         await expect(selectPopoverPage.popover).not.toBeVisible();
       });
+
+      test('pressing Enter on an unselected option should dismiss the popover', async () => {
+        await selectPopoverPage.setup(config, options, false);
+
+        await selectPopoverPage.pressEnterOnOption('apple');
+        await selectPopoverPage.ionPopoverDidDismiss.next();
+        await expect(selectPopoverPage.popover).not.toBeVisible();
+      });
+
+      test('pressing Enter on a selected option should dismiss the popover', async ({ browserName }) => {
+        test.skip(browserName === 'firefox', 'Same behavior as ROU-5437');
+
+        await selectPopoverPage.setup(config, checkedOptions, false);
+
+        await selectPopoverPage.pressEnterOnOption('apple');
+        await selectPopoverPage.ionPopoverDidDismiss.next();
+        await expect(selectPopoverPage.popover).not.toBeVisible();
+      });
     });
   });
 });
diff --git a/core/src/components/select-popover/test/fixtures.ts b/core/src/components/select-popover/test/fixtures.ts
index 14c81033763..5444a889c04 100644
--- a/core/src/components/select-popover/test/fixtures.ts
+++ b/core/src/components/select-popover/test/fixtures.ts
@@ -63,6 +63,11 @@ export class SelectPopoverPage {
     await option.press('Space');
   }
 
+  async pressEnterOnOption(value: string) {
+    const option = this.getOption(value);
+    await option.press('Enter');
+  }
+
   private getOption(value: string) {
     const { multiple, selectPopover } = this;
     const selector = multiple ? 'ion-checkbox' : 'ion-radio';