Kitahara (written: 北原) is a Japanese surname. Notable people with the surname include:
Hakushū Kitahara or Kitahara Ryūkichi (1885–1942), Japanese tanka poetKana Kitahara (born 1988), Japanese footballerKenji Kitahara (born 1976), former Japanese football playerKoki Kitahara or Tatsumi Kitahara (born 1964), Japanese professional wrestlerMie Kitahara (born 1933), Japanese actressRie Kitahara (born 1991), Japanese singer and actressSayaka Kitahara (born 1993), Japanese pop singer, voice actress, and actressWataru Kitahara (born 1982), Japanese futsal player