Mark Jeremy Seymour (born 26 July 1956)   is an Australian musician and singer best known for his work as the frontman and songwriter of rock band Hunters & Collectors.

In 1997, whilst still officially part of Hunters & Collectors he released his debut solo album King Without a Clue, which earned him a nomination in the ARIA Awards for Best Male Artist (as well as Best Debut Single with Last Ditch Cabaret). In 1998, Hunters & Collectors officially split up.

Seymour later released a live DVD/CD in 2001 entitled One Eyed Man, Embedded in 2004, and 2005's Daytime & the Dark. His fourth solo studio album, titled Westgate was released in June, 2007.

Seymour continues to tour, focusing on mostly small acoustic performances.