Kosaka
Kosaka or Kōsaka is the family name of the following people:
- Akinori Kosaka (* 1975), Japanese football player
- Kenji Kosaka (psychiatrist) (* 1939), Japanese psychiatrist
- Kenji Kosaka (politician) (1946-2016), Japanese politician (LDP)
- Kitarō Kōsaka (* 1962), Japanese animation film director
- Kōsaka Masanobu (1527–1578), Japanese samurai
- Masataka Kosaka (1934–1996), Japanese political scientist
- Kosaka Zentarō (1912–2000), Japanese politician, Foreign Minister 1960–1962 and 1976
Kosaka stands for:
- Kosaka (Akita) , municipality in Akita prefecture, Japan
