Seth Appert (born August 9, 1974) is an American ice hockey coach and former college ice hockey player. Appert was the head coach of the Rensselaer Polytechnic Institute men's ice hockey team. Appert played collegiate hockey at Ferris State. On August 14th, 2020, Appert was named Head Coach of the Rochester Americans, the top AHL affiliate of the NHL's Buffalo Sabres.