Kees' t Hart (The Hague, 12 July 1944) is a Dutch writer, poet and literary critic.
Kees' t Hart studied Dutch language and literature at the University of Amsterdam, worked as a teacher in education and later as a study supervisor in Cultural Sciences at the Open University of the Netherlands. He wrote novels, collections of poetry and stories and a collection of essays.
Between 1994 and 1999 he was editor of the literary magazine De Revisor and he compiled a special issue about the Heerenveen sports club for the football magazine Hard gras. His experiences with the club were the basis for the diary: The most beautiful life ... (2001). 't Hart writes reviews for De Groene Amsterdammer and has been living in The Hague since 2004.