Sebastian Kolasiński (Polish: [sɛ'bastian kɔla'ɕiɲskʲi]; born 16 February 1975) is a Polish former competitive ice dancer. With partner Sylwia Nowak, he is the 1998 Skate Canada International bronze medalist, 1999 Cup of Russia bronze medalist, 1994 World Junior champion, and a nine-time Polish national champion.