Järvi is a Finnish surname and also the Finnish word for lake.
Notable people with the surname include:
Iiro Järvi (born 1965), Finnish ice hockey player
Neeme Järvi (born 1937), Estonian-born U.S. conductor
Paavo Järvi (born 1962), Estonian-American conductor
Kristjan Järvi (born 1972), Estonian-American conductor
Jyrki Järvi (born 1966), Finnish sailor, Olympic champion
Raivo Järvi (1954-2012), aka Onu Raivo, Estonian artist, radio personality, politician
Sami Järvi (Sam Lake) (born 1970), a Finnish writer, Max Payne video game series