diff --git a/.changeset/chilled-walls-cheer.md b/.changeset/chilled-walls-cheer.md
new file mode 100644
index 00000000000..f8fd4924215
--- /dev/null
+++ b/.changeset/chilled-walls-cheer.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": patch
+---
+
+Show `Tooltip` on close button in `Dialog`
diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Dev-With-Css-light-colorblind-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Dev-With-Css-light-colorblind-linux.png
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index bd9d578c2e0..9ed9f6750a3 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Dev-With-Sx-And-Css-light-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Dev-With-Sx-And-Css-light-linux.png
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index 8a1864a2211..b58bbfecd68 100644
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index 684bc1f3ff9..6422aa294f4 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Dev-With-Sx-light-high-contrast-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Dev-With-Sx-light-high-contrast-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-colorblind-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-colorblind-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-high-contrast-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-high-contrast-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-tritanopia-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-dark-tritanopia-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-light-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-bottom-light-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-colorblind-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-colorblind-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-dimmed-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-dimmed-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-high-contrast-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-high-contrast-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-dark-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-colorblind-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-colorblind-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-high-contrast-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-high-contrast-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-tritanopia-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-fullscreen-light-tritanopia-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-colorblind-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-colorblind-linux.png
index fb63a4b582d..51e05aab9f1 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-dimmed-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-dimmed-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-high-contrast-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-high-contrast-linux.png
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index fb63a4b582d..51e05aab9f1 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-tritanopia-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-dark-tritanopia-linux.png
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-colorblind-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-colorblind-linux.png
index 1d70c59b77c..2a1ae390420 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-high-contrast-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-high-contrast-linux.png
index b35f1b4204e..78b6ba5294e 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-linux.png
index 1d70c59b77c..2a1ae390420 100644
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diff --git a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-tritanopia-linux.png b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-tritanopia-linux.png
index 1d70c59b77c..2a1ae390420 100644
Binary files a/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-tritanopia-linux.png and b/.playwright/snapshots/components/Dialog.test.ts-snapshots/Dialog-Position-sidesheet-light-tritanopia-linux.png differ
diff --git a/packages/react/src/Dialog/Dialog.module.css b/packages/react/src/Dialog/Dialog.module.css
index 444df0b3510..64a7e24f94c 100644
--- a/packages/react/src/Dialog/Dialog.module.css
+++ b/packages/react/src/Dialog/Dialog.module.css
@@ -119,14 +119,14 @@
   }
 
   @media screen and (prefers-reduced-motion: no-preference) {
-    animation: Overlay--motion-scaleFade 0.2s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running;
+    animation: Overlay--motion-scaleFade 0.2s cubic-bezier(0.33, 1, 0.68, 1) 1ms 1 normal none running;
   }
 
   &[data-position-regular='center'] {
     border-radius: var(--borderRadius-large, var(--borderRadius-large));
 
     @media screen and (prefers-reduced-motion: no-preference) {
-      animation: Overlay--motion-scaleFade 0.2s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running;
+      animation: Overlay--motion-scaleFade 0.2s cubic-bezier(0.33, 1, 0.68, 1) 1ms 1 normal none running;
     }
   }
 
@@ -138,7 +138,7 @@
     border-bottom-left-radius: 0;
 
     @media screen and (prefers-reduced-motion: no-preference) {
-      animation: Overlay--motion-slideInRight 0.25s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running;
+      animation: Overlay--motion-slideInRight 0.25s cubic-bezier(0.33, 1, 0.68, 1) 1ms 1 normal none running;
     }
   }
 
@@ -150,7 +150,7 @@
     border-bottom-right-radius: 0;
 
     @media screen and (prefers-reduced-motion: no-preference) {
-      animation: Overlay--motion-slideInLeft 0.25s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running;
+      animation: Overlay--motion-slideInLeft 0.25s cubic-bezier(0.33, 1, 0.68, 1) 1ms 1 normal none running;
     }
   }
 
@@ -193,7 +193,7 @@
       border-bottom-left-radius: 0;
 
       @media screen and (prefers-reduced-motion: no-preference) {
-        animation: Overlay--motion-slideUp 0.25s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running;
+        animation: Overlay--motion-slideUp 0.25s cubic-bezier(0.33, 1, 0.68, 1) 1ms 1 normal none running;
       }
     }
 
@@ -206,7 +206,7 @@
       flex-grow: 1;
 
       @media screen and (prefers-reduced-motion: no-preference) {
-        animation: Overlay--motion-scaleFade 0.2s cubic-bezier(0.33, 1, 0.68, 1) 0s 1 normal none running;
+        animation: Overlay--motion-scaleFade 0.2s cubic-bezier(0.33, 1, 0.68, 1) 1ms 1 normal none running;
       }
     }
   }
diff --git a/packages/react/src/Dialog/Dialog.tsx b/packages/react/src/Dialog/Dialog.tsx
index f359932bf8b..e9b7addfc71 100644
--- a/packages/react/src/Dialog/Dialog.tsx
+++ b/packages/react/src/Dialog/Dialog.tsx
@@ -677,10 +677,7 @@ const Buttons: React.FC<React.PropsWithChildren<{buttons: DialogButtonProps[]}>>
 }
 
 const CloseButton: React.FC<React.PropsWithChildren<{onClose: () => void}>> = ({onClose}) => {
-  return (
-    // eslint-disable-next-line primer-react/a11y-remove-disable-tooltip
-    <IconButton unsafeDisableTooltip={true} icon={XIcon} aria-label="Close" onClick={onClose} variant="invisible" />
-  )
+  return <IconButton icon={XIcon} aria-label="Close" onClick={onClose} variant="invisible" />
 }
 
 /**