Tkaczuk is the Polish-language variant of the Ukrainian surname Tkachuk. Notable people with the surname include:
(born 1963), Polish professor of agricultural sciences, university professor, expert in plant protection Daniel Tkaczuk (born 1979), Canadian ice hockey player (died 1950), Polish World War II soldier and post-World War II anti-communist Polish resistance fighter (1942–2018), Polish journalist, literary critic, poet Walt Tkaczuk (born 1947), German-born Canadian ice hockey player See also
, Polish graffiti phenomenon similar to Kilroy was here