Jan Trepczyk (Kashubian: Jan Trepczik; 22 October 1907 in Strysza Buda, Kartuzy – 3 September 1989, in Wejherowo, Poland) was one of the most accomplished Kashubian poets, and also a songwriter, a Kashubian ideologist, lexicographer, and teacher. He was a member of the Regional Kashub Association of Kartuzy, of the "Zrzeszeńcy" ("associationists"), and of the Kashub-Pomeranian Association.