diff --git a/_sass/spec/base.scss b/_sass/spec/base.scss
index 9e23b3c1..e0628563 100644
--- a/_sass/spec/base.scss
+++ b/_sass/spec/base.scss
@@ -741,6 +741,11 @@ div.primer-spec-callout {
   &:hover .primer-spec-zeroclipboard-container {
     opacity: 1;
   }
+
+  // Prevent the console prompts from being selectable.
+  span.primer-spec-code-block-non-selectable {
+    user-select: none;
+  }
 }
 
 .tooltipped:hover,
diff --git a/src_js/components/main_content/useEnhancedCodeBlocks.tsx b/src_js/components/main_content/useEnhancedCodeBlocks.tsx
index 074d90fc..c30aea9f 100644
--- a/src_js/components/main_content/useEnhancedCodeBlocks.tsx
+++ b/src_js/components/main_content/useEnhancedCodeBlocks.tsx
@@ -370,7 +370,11 @@ function createCodeBlockLine(options: {
       const childrenToIncludeInSelection = children.slice(i);
       // (3) Wrap remaining children in a new <span> with id=LC_ID.
       codeLine.innerHTML = '';
-      codeLine.appendChild(<span>{childrenToExcludeFromSelection}</span>);
+      codeLine.appendChild(
+        <span class="primer-spec-code-block-non-selectable">
+          {childrenToExcludeFromSelection}
+        </span>,
+      );
       codeLine.appendChild(
         <span id={LC_ID}>{childrenToIncludeInSelection}</span>,
       );