Koski is a surname originating in Finland (in Finnish, it means "rapids"). Notable people with the surname include: Brian Koski (born 20th century), U.S. commentator on football (soccer) talk shows Darius Koski (born 1971), American guitarist and songwriter Eetu Koski (born 1992), Finnish ice hockey player Ilkka Koski (1928–1993), Finnish boxer, Olympic bronze medal Jarmo Koski (born 1951), Finnish actor, voice actor J. J. Koski (born 1996), American football player Markku Koski (born 1981), Finnish snowboarder See also Kosky References Finnish-language surnames