Mark Yakovlevich Weil (Russian: Марк Яковлевич Вайль; 25 January 1952 – 7 September 2007) was a Soviet and Uzbekistani theatre director, and founder and art director of the Ilkhom Theatre in Tashkent.

His father was a soldier, and his mother had studied at the Theatre Institute, Kiev.

His last production was the Greek tragedy The Oresteia; he was murdered the day before it was scheduled to open, and the actors went ahead because the show must go on.

He was reportedly attacked by two unknown males, who hit him on the head with a bottle and stabbed him in the abdomen.

His murder was the subject of a BBC Radio 4 Crossing Continents documentary in April 2008.