Stanisław "Stan" Tymiński (Polish pronunciation: [staˈɲiswaf tɨˈmʲiɲskʲi]; born January 27, 1948) is a Canadian businessman of Polish origin, dealing in electronics and computers, and a sometime-politician in both Poland and Canada. Although Tymiński was born in Pruszków, he was a completely unknown person in his native Poland until shortly before the 1990 presidential election, he emerged from the first ballot as the second strongest candidate; defeating liberal prime minister Tadeusz Mazowiecki and forcing Solidarity leader Lech Wałęsa to stand a second ballot. After Wałęsa defeated him by a wide margin, Tymiński was a leader of Party X in Poland (1990–1995) and then returned to Canada to resume his business activities. Tymiński also contested the 2005 Polish presidential election.