Kalocsai or Kalocsay (meaning "from Kalocsa") is a surname. Notable people with the surname include:
Kalocsai
Kalocsay
- Géza Kalocsay (1913–2008), Hungarian football (soccer) player and manager
- Kálmán Kalocsay (1891–1976), Hungarian Esperanto-language poet, translator and editor who also used the name Peter Peneter