Fighting Solidarity () was a Polish anti-communist underground organization, founded in 1982 by Kornel Morawiecki in Wrocław in response to the de-legalization of Solidarity and government repression of the opposition after martial law was declared in 1981. Created in June 1982, it was one of the most radical splinters of Solidarity. In 1990 many members of Fighting Solidarity founded a political party, the Partia Wolności (Freedom Party).