Jack Weston (born Jack Weinstein; August 21, 1924 – May 3, 1996) was an American film, stage, and television actor.

Weston usually played comic roles in films such as Cactus Flower and Please Don't Eat the Daisies, but also occasionally essayed heavier parts, such as the scheming crook and stalker who, along with Alan Arkin and Richard Crenna, attempts to terrorize and rob a blind Audrey Hepburn in the 1967 film Wait Until Dark. Weston had countless character roles in major films such as The Cincinnati Kid and The Thomas Crown Affair.