diff --git a/Deno.gitignore b/Deno.gitignore
new file mode 100644
index 00000000..7895bc82
--- /dev/null
+++ b/Deno.gitignore
@@ -0,0 +1,20 @@
+*.orig
+*.pyc
+*.swp
+.env
+
+gclient_config.py_entries
+/target/
+/std/hash/_wasm/target
+/tools/wpt/manifest.json
+/test_napi/node_modules
+/test_napi/build
+/test_napi/third_party_tests/node_modules
+
+# Flamegraphs
+/flamebench*.svg
+/flamegraph*.svg
+
+# WPT generated cert files
+/tools/wpt/certs/index.txt*
+/tools/wpt/certs/serial*