diff --git a/src/components/ProgressBar.cy.tsx b/src/components/ProgressBar.cy.tsx
index 29455601..45cef286 100644
--- a/src/components/ProgressBar.cy.tsx
+++ b/src/components/ProgressBar.cy.tsx
@@ -90,4 +90,48 @@ describe('ProgressBar', () => {
 
     cy.findByRole('progressbar').should('have.attr', 'style').and('include', 'scaleX(0.7)');
   });
+
+  it('has ARIA attributes for accessibility', () => {
+    cy.mount(
+      <Wrapper>
+        <ProgressBar {...getProps()} />
+      </Wrapper>
+    );
+
+    cy.findByRole('progressbar')
+      .should('have.attr', 'aria-valuemin', '0')
+      .should('have.attr', 'aria-valuemax', '1')
+      .should('not.have.attr', 'aria-valuenow');
+  });
+
+  it('has aria-valuenow for controlled progress bar', () => {
+    cy.mount(
+      <Wrapper>
+        <ProgressBar {...getProps()} controlledProgress progress={0.5} />
+      </Wrapper>
+    );
+
+    cy.findByRole('progressbar')
+      .should('have.attr', 'aria-valuemin', '0')
+      .should('have.attr', 'aria-valuemax', '1')
+      .should('have.attr', 'aria-valuenow', '0.5');
+  });
+
+  it('clamps aria-valuenow between 0 and 1', () => {
+    cy.mount(
+      <Wrapper>
+        <ProgressBar {...getProps()} controlledProgress progress={1.5} />
+      </Wrapper>
+    );
+
+    cy.findByRole('progressbar').should('have.attr', 'aria-valuenow', '1');
+
+    cy.mount(
+      <Wrapper>
+        <ProgressBar {...getProps()} controlledProgress progress={-0.5} />
+      </Wrapper>
+    );
+
+    cy.findByRole('progressbar').should('have.attr', 'aria-valuenow', '0');
+  });
 });
diff --git a/src/components/ProgressBar.tsx b/src/components/ProgressBar.tsx
index 6414f4e5..2c741a3c 100644
--- a/src/components/ProgressBar.tsx
+++ b/src/components/ProgressBar.tsx
@@ -112,7 +112,21 @@ export function ProgressBar({
           }
   };
 
-  // TODO: add aria-valuenow, aria-valuemax, aria-valuemin
+  // ARIA attributes for progress bar accessibility
+  // Only provide aria-valuenow for controlled progress bars where we know the exact value
+  // For animated progress bars, we omit aria-valuenow as the value changes continuously
+  const ariaProps: {
+    'aria-valuemin': number;
+    'aria-valuemax': number;
+    'aria-valuenow'?: number;
+  } = {
+    'aria-valuemin': 0,
+    'aria-valuemax': 1
+  };
+
+  if (controlledProgress && typeof progress === 'number') {
+    ariaProps['aria-valuenow'] = Math.max(0, Math.min(1, progress));
+  }
 
   return (
     <div className={`${Default.CSS_NAMESPACE}__progress-bar--wrp`} data-hidden={isHidden}>
@@ -125,6 +139,7 @@ export function ProgressBar({
         aria-label="notification timer"
         className={classNames}
         style={style}
+        {...ariaProps}
         {...animationEvent}
       />
     </div>