diff --git a/.gitignore b/.gitignore
index 807922d..b936c0e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,8 @@
 /target
 .idea/
 .DS_Store
+
+# Fuzzing artifacts
+hfuzz_workspace/
+hfuzz_target/
+fuzz/target
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index 6a52b62..ca6e42c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,12 @@ version = "1.0.75"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
 
+[[package]]
+name = "arbitrary"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3d036a3c4ab069c7b410a2ce876bd74808d2d0888a82667669f8e783a898bf1"
+
 [[package]]
 name = "arrayref"
 version = "0.3.7"
@@ -280,6 +286,19 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "honggfuzz"
+version = "0.5.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e8319f3cc8fe416e7aa1ab95dcc04fd49f35397a47d0b2f0f225f6dba346a07"
+dependencies = [
+ "arbitrary",
+ "lazy_static",
+ "memmap2",
+ "rustc_version",
+ "semver",
+]
+
 [[package]]
 name = "indexmap"
 version = "2.0.0"
@@ -307,9 +326,9 @@ checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
 
 [[package]]
 name = "lazy_static"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
 
 [[package]]
 name = "lazycell"
@@ -351,6 +370,15 @@ version = "2.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f232d6ef707e1956a43342693d2a31e72989554d58299d7a88738cc95b0d35c"
 
+[[package]]
+name = "memmap2"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45fd3a57831bf88bc63f8cebc0cf956116276e97fef3966103e96416209f7c92"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
@@ -416,6 +444,14 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "pg_query-fuzz"
+version = "0.0.0"
+dependencies = [
+ "honggfuzz",
+ "pg_query",
+]
+
 [[package]]
 name = "pretty_assertions"
 version = "1.4.0"
@@ -579,6 +615,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.11"
@@ -598,6 +643,12 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
 
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
 name = "serde"
 version = "1.0.188"
diff --git a/Cargo.toml b/Cargo.toml
index be3340f..03d3555 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,3 +42,6 @@ regex = "1.6.0"
 [[bench]]
 name = "parse_vs_summary"
 harness = false
+
+[workspace]
+members = ["fuzz"]
diff --git a/fuzz/Cargo.lock b/fuzz/Cargo.lock
new file mode 100644
index 0000000..3cc0eb6
--- /dev/null
+++ b/fuzz/Cargo.lock
@@ -0,0 +1,899 @@
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+# It is not intended for manual editing.
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+
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diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
new file mode 100644
index 0000000..aa661fc
--- /dev/null
+++ b/fuzz/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "pg_query-fuzz"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[dependencies]
+honggfuzz = "=0.5.58"
+pg_query = { path = ".." }
+
+[[bin]]
+name = "fuzz_parse"
+path = "src/fuzz_parse.rs"
diff --git a/fuzz/README.md b/fuzz/README.md
new file mode 100644
index 0000000..b50a169
--- /dev/null
+++ b/fuzz/README.md
@@ -0,0 +1,54 @@
+# Fuzzing pg_query
+
+This directory contains fuzzing harnesses using [honggfuzz-rs](https://github.com/rust-fuzz/honggfuzz-rs).
+
+## Prerequisites
+
+Install honggfuzz:
+
+```bash
+cargo install honggfuzz
+```
+
+You also need honggfuzz system dependencies. On Ubuntu/Debian:
+
+```bash
+sudo apt-get install build-essential binutils-dev libunwind-dev libblocksruntime-dev liblzma-dev
+```
+
+## Running the fuzzer
+
+From the repository root:
+
+```bash
+cargo hfuzz run fuzz_parse
+```
+
+The fuzzer will run indefinitely, saving crashes to `hfuzz_workspace/fuzz_parse/`.
+
+## Fuzzing targets
+
+The `fuzz_parse` harness tests the following functions with random byte input:
+
+- `pg_query::parse()` - Main SQL parser
+- `pg_query::normalize()` - Query normalization
+- `pg_query::fingerprint()` - Query fingerprinting
+- `pg_query::scan()` - SQL tokenizer
+- `pg_query::split_with_parser()` - Statement splitting (strict)
+- `pg_query::split_with_scanner()` - Statement splitting (lenient)
+- `pg_query::summary()` - Fast summary extraction
+
+When parsing succeeds, it also tests:
+- `ParseResult::deparse()` - Round-trip back to SQL
+- `ParseResult::tables()` - Table extraction
+- `ParseResult::functions()` - Function extraction
+- `ParseResult::statement_types()` - Statement classification
+- `ParseResult::truncate()` - Query truncation
+
+## Reproducing crashes
+
+To reproduce a crash from a saved input file:
+
+```bash
+cargo hfuzz run-debug fuzz_parse hfuzz_workspace/fuzz_parse/SIGABRT.PC.*.fuzz
+```
diff --git a/fuzz/src/fuzz_parse.rs b/fuzz/src/fuzz_parse.rs
new file mode 100644
index 0000000..6110229
--- /dev/null
+++ b/fuzz/src/fuzz_parse.rs
@@ -0,0 +1,40 @@
+use honggfuzz::fuzz;
+
+fn main() {
+    loop {
+        fuzz!(|data: &[u8]| {
+            // Convert bytes to string, skipping invalid UTF-8
+            let Ok(input) = std::str::from_utf8(data) else {
+                return;
+            };
+
+            // Fuzz the main parse function
+            let _ = pg_query::parse(input);
+
+            // Fuzz normalize
+            let _ = pg_query::normalize(input);
+
+            // Fuzz fingerprint
+            let _ = pg_query::fingerprint(input);
+
+            // Fuzz scanner
+            let _ = pg_query::scan(input);
+
+            // Fuzz statement splitting
+            let _ = pg_query::split_with_parser(input);
+            let _ = pg_query::split_with_scanner(input);
+
+            // Fuzz summary
+            let _ = pg_query::summary(input, 100);
+
+            // If parse succeeds, also test deparse round-trip
+            if let Ok(result) = pg_query::parse(input) {
+                let _ = result.deparse();
+                let _ = result.tables();
+                let _ = result.functions();
+                let _ = result.statement_types();
+                let _ = result.truncate(50);
+            }
+        });
+    }
+}
diff --git a/tests/summary_filter_column_tests.rs b/tests/summary_filter_column_tests.rs
index d7f88e8..9ade864 100644
--- a/tests/summary_filter_column_tests.rs
+++ b/tests/summary_filter_column_tests.rs
@@ -11,182 +11,152 @@ use pg_query::FilterColumn;
 fn it_finds_unqualified_names() {
     let result = summary("SELECT * FROM x WHERE y = $1 AND z = 1", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        vec![
-            FilterColumn { schema_name: None, table_name: None, column: "y".to_string() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".to_string() },
-        ]
-    );
+    assert_eq!(filter_columns, vec![FilterColumn { schema_name: None, table_name: None, column: "y".to_string() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".to_string()
+    },]);
 }
 
 #[test]
 fn it_finds_qualified_names() {
     let result = summary("SELECT * FROM x WHERE x.y = $1 AND x.z = 1", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: Some("x".into()),
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_traverses_into_ctes() {
     let result = summary("WITH a AS (SELECT * FROM x WHERE x.y = $1 AND x.z = 1) SELECT * FROM a WHERE b = 5", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "b".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [
+        FilterColumn { schema_name: None, table_name: None, column: "b".into() },
+        FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
+        FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
+    ]);
 }
 
 #[test]
 fn it_recognizes_boolean_tests() {
     let result = summary("SELECT * FROM x WHERE x.y IS TRUE AND x.z IS NOT FALSE", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: Some("x".into()),
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_recognizes_null_tests() {
     let result = summary("SELECT * FROM x WHERE x.y IS NULL AND x.z IS NOT NULL", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: Some("x".into()),
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_finds_coalesce_argument_names() {
     let result = summary("SELECT * FROM x WHERE x.y = COALESCE(z.a, z.b)", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("z".into()), column: "a".into() },
-            FilterColumn { schema_name: None, table_name: Some("z".into()), column: "b".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [
+        FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
+        FilterColumn { schema_name: None, table_name: Some("z".into()), column: "a".into() },
+        FilterColumn { schema_name: None, table_name: Some("z".into()), column: "b".into() },
+    ]);
 }
 
 #[test]
 fn it_finds_unqualified_names_in_union_query() {
     let result = summary("SELECT * FROM x where y = $1 UNION SELECT * FROM x where z = $2", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "y".into() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: None, column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_finds_unqualified_names_in_union_all_query() {
     let result = summary("SELECT * FROM x where y = $1 UNION ALL SELECT * FROM x where z = $2", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "y".into() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: None, column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_finds_unqualified_names_in_except_query() {
     let result = summary("SELECT * FROM x where y = $1 EXCEPT SELECT * FROM x where z = $2", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "y".into() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: None, column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_finds_unqualified_names_in_except_all_query() {
     let result = summary("SELECT * FROM x where y = $1 EXCEPT ALL SELECT * FROM x where z = $2", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "y".into() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: None, column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_finds_unqualified_names_in_intersect_query() {
     let result = summary("SELECT * FROM x where y = $1 INTERSECT SELECT * FROM x where z = $2", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "y".into() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: None, column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_finds_unqualified_names_in_intersect_all_query() {
     let result = summary("SELECT * FROM x where y = $1 INTERSECT ALL SELECT * FROM x where z = $2", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: None, column: "y".into() },
-            FilterColumn { schema_name: None, table_name: None, column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: None, column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_ignores_target_list_columns() {
     let result = summary("SELECT a, y, z FROM x WHERE x.y = $1 AND x.z = 1", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: Some("x".into()),
+        column: "z".into()
+    },]);
 }
 
 #[test]
 fn it_ignores_order_by_columns() {
     let result = summary("SELECT * FROM x WHERE x.y = $1 AND x.z = 1 ORDER BY a, b", -1).unwrap();
     let filter_columns: Vec<FilterColumn> = sorted(result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() },
-            FilterColumn { schema_name: None, table_name: Some("x".into()), column: "z".into() },
-        ]
-    );
+    assert_eq!(filter_columns, [FilterColumn { schema_name: None, table_name: Some("x".into()), column: "y".into() }, FilterColumn {
+        schema_name: None,
+        table_name: Some("x".into()),
+        column: "z".into()
+    },]);
 }
diff --git a/tests/summary_tests.rs b/tests/summary_tests.rs
index 96ca660..ea0d1a5 100644
--- a/tests/summary_tests.rs
+++ b/tests/summary_tests.rs
@@ -48,13 +48,11 @@ fn it_parses_query_with_nested_select_where() {
     assert_eq!(result.cte_names.len(), 0);
     assert_eq!(result.functions.len(), 0);
     let filter_columns: Vec<&FilterColumn> = sorted(&result.filter_columns).collect();
-    assert_eq!(
-        filter_columns,
-        [
-            &FilterColumn { schema_name: None, table_name: None, column: "col1".to_string() },
-            &FilterColumn { schema_name: None, table_name: None, column: "col3".to_string() },
-        ]
-    );
+    assert_eq!(filter_columns, [&FilterColumn { schema_name: None, table_name: None, column: "col1".to_string() }, &FilterColumn {
+        schema_name: None,
+        table_name: None,
+        column: "col3".to_string()
+    },]);
     assert_eq!(result.statement_types(), ["SelectStmt"]);
 }