diff --git a/README.md b/README.md
index bcb4365e..b0dafaba 100644
--- a/README.md
+++ b/README.md
@@ -1494,6 +1494,7 @@ Language scopes:
           - pub-super-fn:     Function definitions marked `pub(super)`
           - mod:              `mod` blocks
           - mod-tests:        `mod tests` blocks
+          - type-def:         Type definitions (`struct`, `enum`, `union`)
 
       --rust-query <TREE-SITTER-QUERY>
           Scope Rust code using a custom tree-sitter query.
diff --git a/src/scoping/langs/rust.rs b/src/scoping/langs/rust.rs
index 50c6f76d..584aa4e6 100644
--- a/src/scoping/langs/rust.rs
+++ b/src/scoping/langs/rust.rs
@@ -64,6 +64,8 @@ pub enum PreparedRustQuery {
     Mod,
     /// `mod tests` blocks.
     ModTests,
+    /// Type definitions (`struct`, `enum`, `union`).
+    TypeDef,
 }
 
 impl From<PreparedRustQuery> for TSQuery {
@@ -201,6 +203,16 @@ impl From<PreparedRustQuery> for TSQuery {
                     ) @mod_tests
                     "#
                 }
+                PreparedRustQuery::TypeDef => {
+                    r"
+                    [
+                        (struct_item)
+                        (enum_item)
+                        (union_item)
+                    ]
+                    @typedef
+                    "
+                }
             },
         )
         .expect("Prepared queries to be valid")
diff --git a/tests/langs/mod.rs b/tests/langs/mod.rs
index c1d12fc7..ef1c87ae 100644
--- a/tests/langs/mod.rs
+++ b/tests/langs/mod.rs
@@ -302,6 +302,11 @@ impl InScopeLinePart {
     include_str!("rust/base.rs"),
     Rust::new(CodeQuery::Prepared(PreparedRustQuery::ModTests)),
 )]
+#[case(
+    "base.rs_typedefs",
+    include_str!("rust/base.rs"),
+    Rust::new(CodeQuery::Prepared(PreparedRustQuery::TypeDef)),
+)]
 #[case(
     "base.tf_variable-block",
     include_str!("hcl/base.tf"),
diff --git a/tests/langs/rust/base.rs b/tests/langs/rust/base.rs
index 270ab7ad..c5c6035c 100644
--- a/tests/langs/rust/base.rs
+++ b/tests/langs/rust/base.rs
@@ -266,3 +266,9 @@ pub enum PubEnum {}
 pub(crate) enum PubCrateEnum {}
 pub(self) enum PubSelfEnum {}
 pub(super) enum PubSuperEnum {}
+
+#[repr(C)]
+union MyUnion {
+    f1: u32,
+    f2: f32,
+}
diff --git a/tests/langs/snapshots/r#mod__langs__base.rs_attribute.snap b/tests/langs/snapshots/r#mod__langs__base.rs_attribute.snap
index 16134622..888b2f18 100644
--- a/tests/langs/snapshots/r#mod__langs__base.rs_attribute.snap
+++ b/tests/langs/snapshots/r#mod__langs__base.rs_attribute.snap
@@ -23,3 +23,6 @@ expression: inscope_parts
 - n: 250
   l: "    #[test]\n"
   m: "      ^^^^   "
+- n: 270
+  l: "#[repr(C)]\n"
+  m: "  ^^^^^^^   "
diff --git a/tests/langs/snapshots/r#mod__langs__base.rs_typedefs.snap b/tests/langs/snapshots/r#mod__langs__base.rs_typedefs.snap
new file mode 100644
index 00000000..52fca3c7
--- /dev/null
+++ b/tests/langs/snapshots/r#mod__langs__base.rs_typedefs.snap
@@ -0,0 +1,64 @@
+---
+source: tests/langs/mod.rs
+expression: inscope_parts
+---
+- n: 70
+  l: "struct TestStruct {\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^
+- n: 71
+  l: "    instance_var: String,\n"
+  m: ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+- n: 72
+  l: "}\n"
+  m: "^  "
+- n: 111
+  l: "enum TestEnum {\n"
+  m: ^^^^^^^^^^^^^^^^^
+- n: 112
+  l: "    VariantOne,\n"
+  m: ^^^^^^^^^^^^^^^^^
+- n: 113
+  l: "    VariantTwo,\n"
+  m: ^^^^^^^^^^^^^^^^^
+- n: 114
+  l: "    VariantOther,\n"
+  m: ^^^^^^^^^^^^^^^^^^^
+- n: 115
+  l: "}\n"
+  m: "^  "
+- n: 260
+  l: "pub struct PubStruct {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 261
+  l: "pub(crate) struct PubCrateStruct {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 262
+  l: "pub(self) struct PubSelfStruct {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 263
+  l: "pub(super) struct PubSuperStruct {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 265
+  l: "pub enum PubEnum {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^  "
+- n: 266
+  l: "pub(crate) enum PubCrateEnum {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 267
+  l: "pub(self) enum PubSelfEnum {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 268
+  l: "pub(super) enum PubSuperEnum {}\n"
+  m: "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  "
+- n: 271
+  l: "union MyUnion {\n"
+  m: ^^^^^^^^^^^^^^^^^
+- n: 272
+  l: "    f1: u32,\n"
+  m: ^^^^^^^^^^^^^^
+- n: 273
+  l: "    f2: f32,\n"
+  m: ^^^^^^^^^^^^^^
+- n: 274
+  l: "}\n"
+  m: "^  "