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