Kivimäki is a Finnish surname. Notable people with the surname include:
Aleksanteri Kivimäki (1997–), Finnish cybercriminal Erkki Kivimäki (1936–2007), Finnish diplomat Mika Kivimäki, Finnish social epidemiologist Samuli Kivimäki (1988–), Finnish ice hockey player Timo Kivimäki, professor of international politics at the University of Copenhagen Toivo Mikael Kivimäki (1886–1968), Prime Minister of Finland 1932–1936