Kouga can refer to:
- Kouga Local Municipality, a municipality in South Africa.
- Kouga Mountains, a mountain range in South Africa.
- Kouga River, a river in South Africa.
- Kōga-ryū, a school of ninjutsu often written as Kouga.
- Kouga or Koga, a character from the manga and anime series InuYasha.
- Kouga Gennosuke, a primary character in the manga and anime series Basilisk: The Kouga Ninja Scrolls.