Jan Lenica (4 January 1928, Poznań, Poland – 5 October 2001, Berlin) was a Polish graphic designer and cartoonist.

A graduate of the Architecture Department of Warsaw Polytechnic, Lenica became a poster illustrator and a collaborator on the early animation films of Walerian Borowczyk.

He used cut-out stop motion animation in his numerous films, which included two features: Adam 2 (1968) and Ubu et la grande gidouille (1976, but released in France only in 1979).

Jan Lenica was the director of: Kempa, Karolina (2018), Polnische Kulturplakate im Sozialismus.

Eine kunstsoziologische Untersuchung zur (Be-)Deutung des Werkes von Jan Lenica und Franciszek Starowieyski, Wiesbaden: Springer, ISBN 978-3658188542