Fighting Solidarity was a Polish anti-Soviet and anti-communist organization. It was founded in June 1982 by Kornel Morawiecki in the Polish city of Wrocław. Its creation was in response to the de-legalization of the Solidarity movement and associated communist government repression of the opposition symbolized by the imposition of martial law in 1981. Many consider this faction as one of the most radical and uncompromising splinters of the wider Solidarity movement.

Kornel Andrzej Morawiecki was a Polish politician, the founder and leader of Fighting Solidarity, one of the splinters of the Solidarity movement in Poland during the 1980s. His academic background was that of a theoretical physicist. He was also a member of the 8th legislature of the Sejm, of which was also the Senior Marshal on 12 November 2015. His son Mateusz Morawiecki was the Prime Minister of Poland from 2017 to 2023, as well as a former chairman of Bank Zachodni WBK.