Jacek Czyż (b. 1953) is a Polish voice actor who dubbed Herry Monster on Ulica Sezamkowa, the Polish co-production of Sesame Street, and Ace Hart on Miasto Piesprawia (Dog City).

Czyż is the Polish voice of Tigger in the Winnie the Pooh franchise, and has also dubbed the Tasmanian Devil in Looney Tunes and elsewhere, Lumiere in Beauty and the Beast, Rafiki in The Lion King, and many characters in The Simpsons Movie, including Kent Brockman, Smithers, Fat Tony, Carl, Dr. Hibbert, and President Arnold Schwarzenegger. Live action dub credits include Bill Cobbs in Night of the Museum, David Bradley as Flich in the Harry Potter films, Dexter Jettster in Star Wars II: Attack of the Clones, and minor roles in The Fantastic Four.