Jacek Mariusz Starościak ([ˈjat͡sɛk starɔɕt͡siak] (born 10 September 1947 in Gdańsk, died 8 May 2021) was a Polish politician who was the mayor of Gdańsk from 1990 to 1991. From 1965 to 1971, he studied at the Faculty of Electronics at Gdańsk University of Technology. From 1971 to 1973, he was an employee of the Navigation Department of Gdynia Maritime University, and later he became an assistant professor at the Maritime Institute in Gdańsk. In 1980, he joined Solidarity and chaired the factory commission in the institute. After the introduction of martial law, he was associated with the diocesan charity commission. In the second half of the 1980s, he was employed as the head of the Editors of Scientific and Professional Literature at the Maritime Publishing House. He co-founded a local b