Patrick Seitz is an American voice actor, ADR director and script writer known for his work for Bang Zoom! Entertainment, Viz Media, Funimation, New Generation Pictures, Studiopolis, Disney/Pixar, Riot Games and NYAV Post. He provided voices for English versions of Japanese anime and video games, including over 100 projects since his initial foray into the voice-over industry in 2000 with the Amazing Nurse Nanako OVA.

He provided the voice for Heathcliff in Disney's 2014 animated feature film, Big Hero 6 and in it's sequel television program, Big Hero 6: The Series.