Heinz Valk (birth name Heinrich Valk; born March 7, 1936 in Gatchina) is an Estonian artist, caricaturist and politician. He is credited for coining the term "Singing Revolution" (Estonian: Laulev revolutsioon) and its slogan "One day, no matter what, we will win!" (Estonian: Ükskord me võidame niikuinii!) some of the most famous sentences from the end of the 1980s and beginning of the 1990s, to describe Estonia's struggle for regaining independence from the Soviet Union in the early 1990s.