diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1dd4f2a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,15 @@
+# Verilator build artifacts
+obj_dir/
+*/obj_dir/
+
+# Python cache
+__pycache__/
+*.pyc
+
+# Test framework outputs
+test_framework/reports/report_*.html
+test_framework/modules/*/vectors/*.hex
+
+# OS
+.DS_Store
+Thumbs.db