diff --git a/.changeset/daterangeinput-trigger-no-longer-emits-invalid-a-d9dw.md b/.changeset/daterangeinput-trigger-no-longer-emits-invalid-a-d9dw.md
new file mode 100644
index 000000000000..e79f12e706de
--- /dev/null
+++ b/.changeset/daterangeinput-trigger-no-longer-emits-invalid-a-d9dw.md
@@ -0,0 +1,6 @@
+---
+'@astryxdesign/core': patch
+---
+
+[fix] DateRangeInput trigger no longer emits invalid aria-required on its button role
+@alex-js-ltd
diff --git a/packages/core/src/DateRangeInput/DateRangeInput.test.tsx b/packages/core/src/DateRangeInput/DateRangeInput.test.tsx
index e6baa64d1d08..ff9c4971c488 100644
--- a/packages/core/src/DateRangeInput/DateRangeInput.test.tsx
+++ b/packages/core/src/DateRangeInput/DateRangeInput.test.tsx
@@ -92,7 +92,10 @@ describe('DateRangeInput', () => {
     expect(screen.getByText('Range')).toBeInTheDocument();
   });
 
-  it('sets aria-required when isRequired is true', () => {
+  it('does not put aria-required on the trigger button even when isRequired is true', () => {
+    // aria-required is not a supported attribute for role="button" (axe:
+    // aria-allowed-attr, WCAG 4.1.2) — the trigger is a plain button, not an
+    // editable/selectable widget role like textbox or combobox.
     render(
       <DateRangeInput
         label="Range"
@@ -102,7 +105,7 @@ describe('DateRangeInput', () => {
       />,
     );
     const trigger = getButton(/Range/);
-    expect(trigger).toHaveAttribute('aria-required', 'true');
+    expect(trigger).not.toHaveAttribute('aria-required');
   });
 
   it('does not set aria-required when isRequired is false', () => {
@@ -111,6 +114,22 @@ describe('DateRangeInput', () => {
     expect(trigger).not.toHaveAttribute('aria-required');
   });
 
+  it('exposes required state via the trigger accessible name instead', () => {
+    // With aria-required unusable on role="button", the required state must
+    // still reach assistive tech — via the accessible name (aria-label),
+    // which is legal on any role.
+    render(
+      <DateRangeInput
+        label="Range"
+        isRequired
+        value={null}
+        onChange={() => {}}
+      />,
+    );
+    const trigger = getButton(/Range/);
+    expect(trigger).toHaveAccessibleName(/Required/);
+  });
+
   it('disables trigger when isDisabled is true', () => {
     render(
       <DateRangeInput
diff --git a/packages/core/src/DateRangeInput/DateRangeInput.tsx b/packages/core/src/DateRangeInput/DateRangeInput.tsx
index c1e3e4235e4f..365123c0f4ed 100644
--- a/packages/core/src/DateRangeInput/DateRangeInput.tsx
+++ b/packages/core/src/DateRangeInput/DateRangeInput.tsx
@@ -509,9 +509,15 @@ export function DateRangeInput({
     [fireChange],
   );
 
-  const triggerAriaLabel = value
-    ? `${label}: ${displayValue}`
-    : `${label}: ${placeholder}`;
+  // aria-required is not a supported attribute for role="button" (the
+  // trigger's implicit role), so a required state can't be exposed that way.
+  // Fold it into the accessible name instead — legal on any role, and reuses
+  // the same word the visible Field label already shows next to it.
+  const triggerAriaLabel = isRequired
+    ? `${label}: ${value ? displayValue : placeholder}, ${t('@astryx.field.required')}`
+    : value
+      ? `${label}: ${displayValue}`
+      : `${label}: ${placeholder}`;
 
   return (
     <Field
@@ -598,7 +604,6 @@ export function DateRangeInput({
           aria-disabled={showsDisabledMessage ? 'true' : undefined}
           aria-label={triggerAriaLabel}
           aria-describedby={ariaDescribedBy}
-          aria-required={isRequired === true ? 'true' : undefined}
           aria-invalid={status?.type === 'error' ? 'true' : undefined}
           aria-busy={isBusy || undefined}
           aria-expanded={popover.isOpen}