Koga may refer to:
Places Japan Koga, Ibaraki (古河) Koga, Fukuoka (古賀) Koga Domain (古河藩)
Elsewhere Koga, a town in Tanzania Koga (crater) on Mars
Other uses Koga (surname) Kōga-ryū, a school of ninjutsu Koga clan, Japanese clan KOGA (formerly Koga Miyata), bicycle brand from the Netherlands Koga Cycling Team, a defunct Dutch cycling team
Fictional characters Koga Gō, a character in the Bleach franchise Koga, a Fuchsia City gym leader and Elite Four member in the Pokémon universe Koga, a ninja dog clan in the manga and anime Ginga: Nagareboshi Gin Koga, the name of the ninja clan that trained Firefly in the G.I. Joe universe Koga, the leader of the eastern yōkai-wolf tribe in the Inuyasha series , the Japanese name for the manga Basilisk by Masaki Segawa , a member of UNDEAD in the series Ensemble Stars!
See also Koka (disambiguation) Kouga (disambiguation) KOGA (disambiguation)