The actor, who played the boss of Elaine (Julia Louis-Dreyfus) in Jerry Seinfeld's NBC sitcom, passed away in Hollywood on Thursday (January 26).
Abercrombie's acting career spanned 57 years, and he was last seen playing 800-year-old wizard Professor Crumbs in Disney sitcom Wizards of Waverly Place.
He appeared on TV shows such as Columbo, Birds of Prey, L.A. Law and Desperate Housewives.
Abercrombie also took roles in the films They Shoot Horses, Don't They?, The Lost World: Jurassic Park and Young Frankenstein.
He is believed to have completed voice work on animated Cartoon Network series Green Lantern prior to his death.
Abercrombie is survived by three brothers.
> Seinfeld: The greatest ever moments
Watch Ian Abercrombie in Seinfeld below: