diff --git a/.changeset/witty-oranges-lick.md b/.changeset/witty-oranges-lick.md
new file mode 100644
index 000000000..808282a16
--- /dev/null
+++ b/.changeset/witty-oranges-lick.md
@@ -0,0 +1,5 @@
+---
+'@lion/ui': patch
+---
+
+[combobox] do not submit form if overlay of combobox is opened and ENTER is hit
diff --git a/packages/ui/components/combobox/src/LionCombobox.js b/packages/ui/components/combobox/src/LionCombobox.js
index 744e2e106..d62486eac 100644
--- a/packages/ui/components/combobox/src/LionCombobox.js
+++ b/packages/ui/components/combobox/src/LionCombobox.js
@@ -1134,7 +1134,7 @@ export class LionCombobox extends LocalizeMixin(OverlayMixin(CustomChoiceGroupMi
         }
         break;
       case 'Enter':
-        if (this.multipleChoice && this.opened) {
+        if (this.opened) {
           ev.preventDefault();
         }
 
@@ -1145,8 +1145,6 @@ export class LionCombobox extends LocalizeMixin(OverlayMixin(CustomChoiceGroupMi
             this.formElements[this.activeIndex].hasAttribute('aria-hidden') ||
             !this.opened)
         ) {
-          ev.preventDefault();
-
           this.modelValue = this.parser([...this.modelValue, this._inputNode.value]);
           this._inputNode.value = '';
           this.opened = false;
diff --git a/packages/ui/components/combobox/test/lion-combobox.test.js b/packages/ui/components/combobox/test/lion-combobox.test.js
index 0a31c0892..dac814cb1 100644
--- a/packages/ui/components/combobox/test/lion-combobox.test.js
+++ b/packages/ui/components/combobox/test/lion-combobox.test.js
@@ -985,6 +985,57 @@ describe('lion-combobox', () => {
       await el.updateComplete;
       expect(el.modelValue).to.eql(['Art']);
     });
+
+    it('submits form on [Enter] when listbox is closed', async () => {
+      const submitSpy = sinon.spy(e => e.preventDefault());
+      const el = /** @type {HTMLFormElement}  */ (
+        await fixture(html`
+          <form @submit=${submitSpy}>
+            <lion-combobox name="foo">
+              <lion-option .choiceValue="${'Artichoke'}">Artichoke</lion-option>
+              <lion-option .choiceValue="${'Chard'}">Chard</lion-option>
+              <lion-option .choiceValue="${'Chicory'}">Chicory</lion-option>
+              <lion-option .choiceValue="${'Victoria Plum'}">Victoria Plum</lion-option>
+            </lion-combobox>
+            <button type="submit">submit</button>
+          </form>
+        `)
+      );
+      const combobox = /** @type {LionCombobox} */ (el.querySelector('[name="foo"]'));
+      const { _inputNode } = getComboboxMembers(combobox);
+      await combobox.updateComplete;
+      _inputNode.focus();
+      await sendKeys({
+        press: 'Enter',
+      });
+      expect(submitSpy.callCount).to.equal(1);
+    });
+
+    it('does not submit form on [Enter] when listbox is opened', async () => {
+      const submitSpy = sinon.spy(e => e.preventDefault());
+      const el = /** @type {HTMLFormElement}  */ (
+        await fixture(html`
+          <form @submit=${submitSpy}>
+            <lion-combobox name="foo">
+              <lion-option .choiceValue="${'Artichoke'}">Artichoke</lion-option>
+              <lion-option .choiceValue="${'Chard'}">Chard</lion-option>
+              <lion-option .choiceValue="${'Chicory'}">Chicory</lion-option>
+              <lion-option .choiceValue="${'Victoria Plum'}">Victoria Plum</lion-option>
+            </lion-combobox>
+            <button type="submit">submit</button>
+          </form>
+        `)
+      );
+      const combobox = /** @type {LionCombobox} */ (el.querySelector('[name="foo"]'));
+      const { _inputNode } = getComboboxMembers(combobox);
+      combobox.opened = true;
+      await combobox.updateComplete;
+      _inputNode.focus();
+      await sendKeys({
+        press: 'Enter',
+      });
+      expect(submitSpy.callCount).to.equal(0);
+    });
   });
 
   describe('Overlay visibility', () => {