Juliusz Machulski (born 10 March 1955 in Olsztyn)[1] is a Polish film director, screenwriter, producer and actor.

Son of noted actor Jan Machulski, he became notable for his comedies ridiculing the life in communist-ruled Poland of the 1970s and 1980s.

Kingsajz, a fantasy comedy made in 1987 remains one of his most important movies till date due to its great social significance.

After his Matki, żony i kochanki, a television series many judged the end of director who failed to adapt to new environment.

In 1997 he proved those opinions to be wrong when his Kiler became a huge hit and is now considered as cult movie along with its sequel, Kiler-ów 2-óch.