diff --git a/.changeset/erken-gelen-oturur.md b/.changeset/erken-gelen-oturur.md
new file mode 100644
index 00000000000..285debac473
--- /dev/null
+++ b/.changeset/erken-gelen-oturur.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': patch
+---
+
+UnderlineNav: Display loading counters only for items with the "counter" prop.
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-colorblind-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-colorblind-linux.png
index a960918babc..92c1a0e9ffd 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-colorblind-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-colorblind-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-dimmed-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-dimmed-linux.png
index c5c4f595ea4..eb6a6146938 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-dimmed-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-dimmed-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-high-contrast-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-high-contrast-linux.png
index 9f940e52411..25597772826 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-high-contrast-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-high-contrast-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-linux.png
index 737ba2107fe..92c1a0e9ffd 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-tritanopia-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-tritanopia-linux.png
index a960918babc..f120b27b6e4 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-tritanopia-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-dark-tritanopia-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-colorblind-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-colorblind-linux.png
index 088f540a5af..ac087d9077b 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-colorblind-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-colorblind-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-high-contrast-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-high-contrast-linux.png
index defb1d07a4c..3a0308a93c8 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-high-contrast-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-high-contrast-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-linux.png
index 088f540a5af..ffa09fbe236 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-linux.png differ
diff --git a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-tritanopia-linux.png b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-tritanopia-linux.png
index 088f540a5af..ed3ec0d8ebf 100644
Binary files a/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-tritanopia-linux.png and b/.playwright/snapshots/components/UnderlineNav.test.ts-snapshots/UnderlineNav-Counters-Loading-State-light-tritanopia-linux.png differ
diff --git a/packages/react/src/internal/components/UnderlineTabbedInterface.tsx b/packages/react/src/internal/components/UnderlineTabbedInterface.tsx
index b76b6e5c4c5..57198833a0e 100644
--- a/packages/react/src/internal/components/UnderlineTabbedInterface.tsx
+++ b/packages/react/src/internal/components/UnderlineTabbedInterface.tsx
@@ -220,17 +220,17 @@ export const UnderlineItem = forwardRef(
             {children}
           </span>
         )}
-        {loadingCounters ? (
-          <span data-component="counter">
-            <LoadingCounter />
-          </span>
-        ) : (
-          counter !== undefined && (
+        {counter !== undefined ? (
+          loadingCounters ? (
+            <span data-component="counter">
+              <LoadingCounter />
+            </span>
+          ) : (
             <span data-component="counter">
               <CounterLabel>{counter}</CounterLabel>
             </span>
           )
-        )}
+        ) : null}
       </StyledUnderlineItem>
     )
   },