diff --git a/packages/react-core/src/components/SimpleList/SimpleList.tsx b/packages/react-core/src/components/SimpleList/SimpleList.tsx
index 3116ca0ea6d..0ea125919eb 100644
--- a/packages/react-core/src/components/SimpleList/SimpleList.tsx
+++ b/packages/react-core/src/components/SimpleList/SimpleList.tsx
@@ -77,7 +77,7 @@ export class SimpleList extends React.Component<SimpleListProps, SimpleListState
         <div className={css(styles.simpleList, className)} {...props}>
           {isGrouped && children}
           {!isGrouped && (
-            <ul role="list" aria-label={ariaLabel}>
+            <ul className={css('pf-v5-c-simple-list__list')} role="list" aria-label={ariaLabel}>
               {children}
             </ul>
           )}
diff --git a/packages/react-core/src/components/SimpleList/SimpleListGroup.tsx b/packages/react-core/src/components/SimpleList/SimpleListGroup.tsx
index 4af1a9f5815..8f85f302291 100644
--- a/packages/react-core/src/components/SimpleList/SimpleListGroup.tsx
+++ b/packages/react-core/src/components/SimpleList/SimpleListGroup.tsx
@@ -27,7 +27,7 @@ export const SimpleListGroup: React.FunctionComponent<SimpleListGroupProps> = ({
     <h2 id={id} className={css(styles.simpleListTitle, titleClassName)} aria-hidden="true">
       {title}
     </h2>
-    <ul className={css(className)} role="list" aria-labelledby={id}>
+    <ul className={css('pf-v5-c-simple-list__list', className)} role="list" aria-labelledby={id}>
       {children}
     </ul>
   </section>
diff --git a/packages/react-core/src/components/SimpleList/SimpleListItem.tsx b/packages/react-core/src/components/SimpleList/SimpleListItem.tsx
index 6792f9a54de..7bf21b1c8a6 100644
--- a/packages/react-core/src/components/SimpleList/SimpleListItem.tsx
+++ b/packages/react-core/src/components/SimpleList/SimpleListItem.tsx
@@ -72,7 +72,7 @@ export class SimpleListItem extends React.Component<SimpleListItemProps> {
               };
 
           return (
-            <li className={css(className)} {...props}>
+            <li className={css('pf-v5-c-simple-list__item', className)} {...props}>
               <Component
                 className={css(
                   styles.simpleListItemLink,
diff --git a/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListGroup.test.tsx.snap b/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListGroup.test.tsx.snap
index c94f5e98f68..25f6b44327a 100644
--- a/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListGroup.test.tsx.snap
+++ b/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListGroup.test.tsx.snap
@@ -12,7 +12,7 @@ exports[`SimpleListGroup should match snapshot (auto-generated) 1`] = `
     />
     <ul
       aria-labelledby="''"
-      class="''"
+      class="pf-v5-c-simple-list__list ''"
       role="list"
     >
       ReactNode
diff --git a/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListItem.test.tsx.snap b/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListItem.test.tsx.snap
index 8b4bedf39ce..7146941d7d3 100644
--- a/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListItem.test.tsx.snap
+++ b/packages/react-core/src/components/SimpleList/__tests__/Generated/__snapshots__/SimpleListItem.test.tsx.snap
@@ -3,7 +3,7 @@
 exports[`SimpleListItem should match snapshot (auto-generated) 1`] = `
 <DocumentFragment>
   <li
-    class="''"
+    class="pf-v5-c-simple-list__item ''"
   >
     <button
       class="pf-v5-c-simple-list__item-link ''"
diff --git a/packages/react-core/src/components/SimpleList/__tests__/__snapshots__/SimpleList.test.tsx.snap b/packages/react-core/src/components/SimpleList/__tests__/__snapshots__/SimpleList.test.tsx.snap
index 2637e641ea0..1f1c553b385 100644
--- a/packages/react-core/src/components/SimpleList/__tests__/__snapshots__/SimpleList.test.tsx.snap
+++ b/packages/react-core/src/components/SimpleList/__tests__/__snapshots__/SimpleList.test.tsx.snap
@@ -7,10 +7,11 @@ exports[`SimpleList renders aria-labelled content 1`] = `
   >
     <ul
       aria-label="This is a simple list"
+      class="pf-v5-c-simple-list__list"
       role="list"
     >
       <li
-        class=""
+        class="pf-v5-c-simple-list__item"
       >
         <button
           class="pf-v5-c-simple-list__item-link"
@@ -20,7 +21,7 @@ exports[`SimpleList renders aria-labelled content 1`] = `
         </button>
       </li>
       <li
-        class=""
+        class="pf-v5-c-simple-list__item"
       >
         <button
           class="pf-v5-c-simple-list__item-link"
@@ -30,7 +31,7 @@ exports[`SimpleList renders aria-labelled content 1`] = `
         </button>
       </li>
       <li
-        class=""
+        class="pf-v5-c-simple-list__item"
       >
         <button
           class="pf-v5-c-simple-list__item-link"
@@ -50,10 +51,11 @@ exports[`SimpleList renders content 1`] = `
     class="pf-v5-c-simple-list"
   >
     <ul
+      class="pf-v5-c-simple-list__list"
       role="list"
     >
       <li
-        class=""
+        class="pf-v5-c-simple-list__item"
       >
         <button
           class="pf-v5-c-simple-list__item-link"
@@ -63,7 +65,7 @@ exports[`SimpleList renders content 1`] = `
         </button>
       </li>
       <li
-        class=""
+        class="pf-v5-c-simple-list__item"
       >
         <button
           class="pf-v5-c-simple-list__item-link"
@@ -73,7 +75,7 @@ exports[`SimpleList renders content 1`] = `
         </button>
       </li>
       <li
-        class=""
+        class="pf-v5-c-simple-list__item"
       >
         <button
           class="pf-v5-c-simple-list__item-link"
@@ -104,11 +106,11 @@ exports[`SimpleList renders grouped content 1`] = `
       </h2>
       <ul
         aria-labelledby=""
-        class=""
+        class="pf-v5-c-simple-list__list"
         role="list"
       >
         <li
-          class=""
+          class="pf-v5-c-simple-list__item"
         >
           <button
             class="pf-v5-c-simple-list__item-link"
@@ -118,7 +120,7 @@ exports[`SimpleList renders grouped content 1`] = `
           </button>
         </li>
         <li
-          class=""
+          class="pf-v5-c-simple-list__item"
         >
           <button
             class="pf-v5-c-simple-list__item-link"
@@ -128,7 +130,7 @@ exports[`SimpleList renders grouped content 1`] = `
           </button>
         </li>
         <li
-          class=""
+          class="pf-v5-c-simple-list__item"
         >
           <button
             class="pf-v5-c-simple-list__item-link"