diff --git a/src/components/SplitButton/SplitButton.stories.tsx b/src/components/SplitButton/SplitButton.stories.tsx
index a8ac1457a..3eb954579 100644
--- a/src/components/SplitButton/SplitButton.stories.tsx
+++ b/src/components/SplitButton/SplitButton.stories.tsx
@@ -61,3 +61,49 @@ export const Playground: Story = {
     menu: menuItems,
   },
 };
+
+// Button Types
+export const Primary: Story = {
+  args: {
+    type: 'primary',
+    children: 'Primary Split Button',
+    menu: menuItems,
+  },
+};
+
+export const Secondary: Story = {
+  args: {
+    type: 'secondary',
+    children: 'Secondary Split Button',
+    menu: menuItems,
+  },
+};
+
+// Disabled States
+export const PrimaryDisabled: Story = {
+  args: {
+    type: 'primary',
+    children: 'Disabled Primary',
+    menu: menuItems,
+    disabled: true,
+  },
+};
+
+export const SecondaryDisabled: Story = {
+  args: {
+    type: 'secondary',
+    children: 'Disabled Secondary',
+    menu: menuItems,
+    disabled: true,
+  },
+};
+
+// Interactive
+export const Interactive: Story = {
+  args: {
+    type: 'primary',
+    children: 'Interactive Split Button',
+    menu: menuItems,
+    onClick: () => console.log('clicked'),
+  },
+};
diff --git a/src/components/SplitButton/SplitButton.tsx b/src/components/SplitButton/SplitButton.tsx
index 8516ff6a1..7d12542b5 100644
--- a/src/components/SplitButton/SplitButton.tsx
+++ b/src/components/SplitButton/SplitButton.tsx
@@ -53,6 +53,7 @@ export const SplitButton = ({
       modal={modal}
     >
       <SplitButtonTrigger
+        data-testid="split-button"
         $disabled={disabled}
         $fillWidth={fillWidth}
         ref={ref}
@@ -60,6 +61,7 @@ export const SplitButton = ({
       >
         <PrimaryButton
           disabled={disabled}
+          aria-disabled={disabled || undefined}
           $type={type}
           $fillWidth={fillWidth}
           {...props}
@@ -75,6 +77,7 @@ export const SplitButton = ({
         <SecondaryButton
           as={Dropdown.Trigger}
           disabled={disabled}
+          aria-disabled={disabled || undefined}
           $type={type}
           asChild
           data-testid="split-button-dropdown"
diff --git a/tests/buttons/splitbutton.spec.ts b/tests/buttons/splitbutton.spec.ts
new file mode 100644
index 000000000..e8534259a
--- /dev/null
+++ b/tests/buttons/splitbutton.spec.ts
@@ -0,0 +1,318 @@
+import { test as it, expect } from '@playwright/test';
+import { getStoryUrl } from '../utils';
+
+const { describe, use } = it;
+
+describe('SplitButton Visual Regression', () => {
+  describe('Light Theme (Storybook Global)', () => {
+    describe('Button Types', () => {
+      it('primary button matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(splitButton).toHaveScreenshot('splitbutton-primary-light.png', {
+          maxDiffPixels: 100,
+        });
+      });
+
+      it('secondary button matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(splitButton).toHaveScreenshot('splitbutton-secondary-light.png', {
+          maxDiffPixels: 100,
+        });
+      });
+    });
+
+    describe('Disabled States', () => {
+      it('primary disabled matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary-disabled', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        const primaryButton = page.getByRole('button').first();
+        const dropdownTrigger = page.locator('[data-testid="split-button-dropdown"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(primaryButton).toHaveAttribute('aria-disabled', 'true');
+        await expect(dropdownTrigger).toHaveAttribute('aria-disabled', 'true');
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-primary-disabled-light.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+
+      it('secondary disabled matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary-disabled', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        const primaryButton = page.getByRole('button').first();
+        const dropdownTrigger = page.locator('[data-testid="split-button-dropdown"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(primaryButton).toHaveAttribute('aria-disabled', 'true');
+        await expect(dropdownTrigger).toHaveAttribute('aria-disabled', 'true');
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-secondary-disabled-light.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+    });
+
+    describe('Interactive States', () => {
+      it('hover state - primary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await splitButton.hover();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-primary-hover-light.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+
+      it('focus state - primary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        // Focus the primary button inside the split button
+        const primaryButton = page.getByRole('button').first();
+        await primaryButton.focus();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-primary-focus-light.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+
+      it('hover state - secondary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await splitButton.hover();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-secondary-hover-light.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+
+      it('focus state - secondary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary', 'light'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        // Focus the primary button inside the split button
+        const primaryButton = page.getByRole('button').first();
+        await primaryButton.focus();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-secondary-focus-light.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+    });
+  });
+
+  describe('Dark Theme (System prefers-color-scheme)', () => {
+    use({ colorScheme: 'dark' });
+
+    describe('Button Types', () => {
+      it('primary button matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(splitButton).toHaveScreenshot('splitbutton-primary-dark.png', {
+          maxDiffPixels: 100,
+        });
+      });
+
+      it('secondary button matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(splitButton).toHaveScreenshot('splitbutton-secondary-dark.png', {
+          maxDiffPixels: 100,
+        });
+      });
+    });
+
+    describe('Disabled States', () => {
+      it('primary disabled matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary-disabled'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        const primaryButton = page.getByRole('button').first();
+        const dropdownTrigger = page.locator('[data-testid="split-button-dropdown"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(primaryButton).toHaveAttribute('aria-disabled', 'true');
+        await expect(dropdownTrigger).toHaveAttribute('aria-disabled', 'true');
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-primary-disabled-dark.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+
+      it('secondary disabled matches snapshot', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary-disabled'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        const primaryButton = page.getByRole('button').first();
+        const dropdownTrigger = page.locator('[data-testid="split-button-dropdown"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await expect(primaryButton).toHaveAttribute('aria-disabled', 'true');
+        await expect(dropdownTrigger).toHaveAttribute('aria-disabled', 'true');
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-secondary-disabled-dark.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+    });
+
+    describe('Interactive States', () => {
+      it('hover state - primary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await splitButton.hover();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot('splitbutton-primary-hover-dark.png', {
+          maxDiffPixels: 100,
+        });
+      });
+
+      it('focus state - primary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--primary'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        // Focus the primary button inside the split button
+        const primaryButton = page.getByRole('button').first();
+        await primaryButton.focus();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot('splitbutton-primary-focus-dark.png', {
+          maxDiffPixels: 100,
+        });
+      });
+
+      it('hover state - secondary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        await splitButton.hover();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-secondary-hover-dark.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+
+      it('focus state - secondary', async ({ page }) => {
+        await page.goto(getStoryUrl('buttons-splitbutton--secondary'), {
+          waitUntil: 'networkidle',
+        });
+        const splitButton = page.locator('[data-testid="split-button"]');
+        await expect(splitButton).toBeVisible({ timeout: 10000 });
+        // Focus the primary button inside the split button
+        const primaryButton = page.getByRole('button').first();
+        await primaryButton.focus();
+        await page.waitForTimeout(100);
+        await expect(splitButton).toHaveScreenshot(
+          'splitbutton-secondary-focus-dark.png',
+          {
+            maxDiffPixels: 100,
+          }
+        );
+      });
+    });
+  });
+
+  describe('Events and Accessibility', () => {
+    it('click event fires correctly', async ({ page }) => {
+      const consoleMessages: string[] = [];
+      page.on('console', msg => consoleMessages.push(msg.text()));
+
+      await page.goto(getStoryUrl('buttons-splitbutton--interactive', 'light'), {
+        waitUntil: 'networkidle',
+      });
+      const primaryButton = page.getByRole('button').first();
+      await expect(primaryButton).toBeVisible({ timeout: 10000 });
+      await expect(primaryButton).toBeEnabled();
+
+      await primaryButton.click();
+
+      // Verify console log was triggered
+      expect(consoleMessages.some(msg => msg.includes('clicked'))).toBe(true);
+    });
+
+    it('disabled button prevents click', async ({ page }) => {
+      await page.goto(getStoryUrl('buttons-splitbutton--primary-disabled', 'light'), {
+        waitUntil: 'networkidle',
+      });
+      const primaryButton = page.getByRole('button').first();
+      const dropdownTrigger = page.locator('[data-testid="split-button-dropdown"]');
+      await expect(primaryButton).toBeDisabled();
+      await expect(primaryButton).toHaveAttribute('aria-disabled', 'true');
+      await expect(dropdownTrigger).toHaveAttribute('aria-disabled', 'true');
+    });
+
+    it('keyboard navigation works', async ({ page }) => {
+      const consoleMessages: string[] = [];
+      page.on('console', msg => consoleMessages.push(msg.text()));
+
+      await page.goto(getStoryUrl('buttons-splitbutton--interactive', 'light'), {
+        waitUntil: 'networkidle',
+      });
+      const primaryButton = page.getByRole('button').first();
+      await expect(primaryButton).toBeVisible({ timeout: 10000 });
+
+      await primaryButton.focus();
+      await expect(primaryButton).toBeFocused();
+      await primaryButton.press('Enter');
+
+      // Verify console log was triggered
+      expect(consoleMessages.some(msg => msg.includes('clicked'))).toBe(true);
+    });
+  });
+});
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