Trendelenburg could refer to:
- Friedrich Adolf Trendelenburg (1802–1872), German philosopher and philologist
- His son, Friedrich Trendelenburg (1844–1924), German surgeon
- Trendelenburg gait
- Trendelenburg position
- Trendelenburg test
- Trendelenburg's sign
- Trendelenburg's operation - great saphenous vein ligation as a treatment of varicose veins.