diff --git a/fuzzing/orphans/hashbrown/Android.bp b/fuzzing/orphans/hashbrown/Android.bp
index d69b019..4068681 100644
--- a/fuzzing/orphans/hashbrown/Android.bp
+++ b/fuzzing/orphans/hashbrown/Android.bp
@@ -23,4 +23,17 @@
         fuzz_on_haiku_device: true,
         fuzz_on_haiku_host: true,
     },
+}
+
+rust_fuzz {
+    name: "hashbrown_hashset_fuzzer",
+    srcs: ["hashbrown_hashset_fuzzer.rs"],
+    rustlibs: [
+        "libarbitrary",
+        "libhashbrown",
+    ],
+    fuzz_config: {
+        fuzz_on_haiku_device: true,
+        fuzz_on_haiku_host: true,
+    },
 }
\ No newline at end of file
diff --git a/fuzzing/orphans/hashbrown/hashbrown_hashset_fuzzer.rs b/fuzzing/orphans/hashbrown/hashbrown_hashset_fuzzer.rs
new file mode 100644
index 0000000..3eb7baf
--- /dev/null
+++ b/fuzzing/orphans/hashbrown/hashbrown_hashset_fuzzer.rs
@@ -0,0 +1,87 @@
+// Copyright 2021, The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#![allow(missing_docs)]
+#![no_main]
+#![feature(bench_black_box)]
+
+use hashbrown::HashSet;
+use libfuzzer_sys::arbitrary::Arbitrary;
+use libfuzzer_sys::fuzz_target;
+
+const MAX_RESERVE: usize = 1024;
+
+#[derive(Arbitrary, Debug, Eq, Hash, PartialEq)]
+enum Data {
+    A,
+    B,
+    Int { val: u8 },
+}
+
+#[derive(Arbitrary, Debug)]
+enum HashSetMethods {
+    Insert { value: Data },
+    Remove { value: Data },
+    Contains { value: Data },
+    Get { value: Data },
+    GetOrInsert { value: Data },
+    Iter,
+    Drain,
+    Clear,
+    Reserve { additional: usize },
+    ShrinkToFit,
+    ShrinkTo { min_capacity: usize },
+}
+
+fuzz_target!(|commands: Vec<HashSetMethods>| {
+    let mut set = HashSet::new();
+    for command in commands {
+        match command {
+            HashSetMethods::Insert { value } => {
+                set.insert(value);
+            }
+            HashSetMethods::Remove { value } => {
+                set.remove(&value);
+            }
+            HashSetMethods::Contains { value } => {
+                set.contains(&value);
+            }
+            HashSetMethods::Get { value } => {
+                set.get(&value);
+            }
+            HashSetMethods::GetOrInsert { value } => {
+                set.get_or_insert(value);
+            }
+            HashSetMethods::Iter => {
+                std::hint::black_box(set.iter().count());
+            }
+            HashSetMethods::Drain => {
+                std::hint::black_box(set.drain().count());
+            }
+            HashSetMethods::Clear => {
+                set.clear();
+            }
+            HashSetMethods::Reserve { additional } => {
+                // Avoid allocating too much memory and crashing the fuzzer.
+                set.reserve(additional % MAX_RESERVE);
+            }
+            HashSetMethods::ShrinkToFit => {
+                set.shrink_to_fit();
+            }
+            HashSetMethods::ShrinkTo { min_capacity } => {
+                set.shrink_to(min_capacity % MAX_RESERVE);
+            }
+        }
+    }
+});