Leah Cherniak (born 1956) is a Canadian playwright, actor, and teacher.
She is a co-founder of Theatre Columbus (now called Common Boots).
[1] She later studied at École Jacques Lecoq, where she met Martha Ross.
[2] Cherniak co-founded Theatre Columbus with Martha Ross in 1984.
[3] Beginning in 1985, Cherniak taught clown at the National Theatre School.