diff --git a/.changeset/lucky-numbers-glow.md b/.changeset/lucky-numbers-glow.md
new file mode 100644
index 000000000..3be05928b
--- /dev/null
+++ b/.changeset/lucky-numbers-glow.md
@@ -0,0 +1,5 @@
+---
+'@metaplex-foundation/kinobi': patch
+---
+
+Add support to prefix string type in Rust client
diff --git a/src/renderers/rust/getTypeManifestVisitor.ts b/src/renderers/rust/getTypeManifestVisitor.ts
index f516f1de5..f6ff7a980 100644
--- a/src/renderers/rust/getTypeManifestVisitor.ts
+++ b/src/renderers/rust/getTypeManifestVisitor.ts
@@ -400,14 +400,32 @@ export function getTypeManifestVisitor() {
         visitStringType(stringType) {
           if (
             isNode(stringType.size, 'prefixedSizeNode') &&
-            stringType.size.prefix.format === 'u32' &&
             stringType.size.prefix.endian === 'le'
           ) {
-            return {
-              type: 'String',
-              imports: new RustImportMap(),
-              nestedStructs: [],
-            };
+            switch (stringType.size.prefix.format) {
+              case 'u32':
+                return {
+                  type: 'String',
+                  imports: new RustImportMap(),
+                  nestedStructs: [],
+                };
+              case 'u8':
+              case 'u16':
+              case 'u64': {
+                const prefix = stringType.size.prefix.format.toUpperCase();
+                return {
+                  type: `${prefix}PrefixString`,
+                  imports: new RustImportMap().add(
+                    `kaigan::types::${prefix}PrefixString`
+                  ),
+                  nestedStructs: [],
+                };
+              }
+              default:
+                throw new Error(
+                  `'String size not supported: ${stringType.size.prefix.format}`
+                );
+            }
           }
 
           if (isNode(stringType.size, 'fixedSizeNode')) {
diff --git a/test/renderers/rust/definedTypesPage.test.ts b/test/renderers/rust/definedTypesPage.test.ts
new file mode 100644
index 000000000..2416ffff6
--- /dev/null
+++ b/test/renderers/rust/definedTypesPage.test.ts
@@ -0,0 +1,43 @@
+import test from 'ava';
+import {
+  definedTypeNode,
+  numberTypeNode,
+  prefixedSizeNode,
+  programNode,
+  stringTypeNode,
+  structFieldTypeNode,
+  structTypeNode,
+  visit,
+} from '../../../src';
+import { getRenderMapVisitor } from '../../../src/renderers/rust/getRenderMapVisitor';
+import { codeContains } from './_setup';
+
+test('it renders a prefix string on a defined type', (t) => {
+  // Given the following program with 1 defined type using a prefixed size string.
+  const node = programNode({
+    name: 'splToken',
+    publicKey: 'TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA',
+    definedTypes: [
+      definedTypeNode({
+        name: 'blob',
+        type: structTypeNode([
+          structFieldTypeNode({
+            name: 'contentType',
+            type: stringTypeNode({
+              size: prefixedSizeNode(numberTypeNode('u8')),
+            }),
+          }),
+        ]),
+      }),
+    ],
+  });
+
+  // When we render it.
+  const renderMap = visit(node, getRenderMapVisitor());
+
+  // Then we expect the following use and identifier to be rendered.
+  codeContains(t, renderMap.get('types/blob.rs'), [
+    `use kaigan::types::U8PrefixString;`,
+    `content_type: U8PrefixString,`,
+  ]);
+});