Sorkin was married to Aviva Dolnick Sorkin (died March 16, 2009), who danced for many years with the Sybil Shearer Dance Company. He died in 1985 of cancer in Milwaukee, Wisconsin.Lawrence B. Johnson, "Leonard Sorkin embodied music's spirit" Milwaukee Sentinel, June 13, 1985 He is buried in Greenwood Cemetery in Milwaukee, Wisconsin.Milwaukee Sentinel, June 10, 1985 He is the father of the theoretical physicist Rafael Sorkin and daughter Ballerina and Actress Naomi Sorkin
