Jan Stefan Pietrzak (pronounced ; born 26 April 1937) is a Polish comedian, politician, singer-songwriter, actor, and columnist for "Tygodnik Solidarność" (Solidarity Weekly). He was born in Warsaw. In 1967 Pietrzak founded "Pod Egidą" ("Under the Aegis"), a literacy school. He starred in the comedy series "Czterdziestolatek" from 1974 to 1977.