Greg Champion OAM (born 1955) is an Australian songwriter, guitarist, and radio personality.

Born in Benalla, Victoria, Champion is most recognised for his work as part of the Coodabeen Champions as a songwriter and guitarist. Greg often appears on the program writing songs about both Australian rules football and cricket.

He is an avid Australian rules football fan, supporting the Adelaide Crows, and since the 1980s has penned many tunes on the Australian game. Of these, the most famous is "That's the Thing About Football", which has gone down as a classic Australian rules song, and has been used on Seven Network's Australian Football League coverage since Seven bought rights to the song in 1994. The song would peak at 31 on the ARIA charts following the 1994 AFL Grand Final. Seven would use the song over a number of seasons, later remixing it with different vocalists.

Greg Champion spent his early childhood in Vienna, before his family moved back to Australia. He grew up in Hectorville, a suburb of the South Australian capital Adelaide, and was educated at Pulteney Grammar.

He would move to Melbourne in the late 1970s, and beginning in 1981 on Melbourne radio station 3RRR has appeared on various Australian radio stations (especially ABC Local Radio) as part of the Coodabeens team, singing parodies of popular songs and relating them to Australian rules footballers.

Champion has written hundreds of songs (many serious, many humorous) and is a multi-awarded country/folk singer, who after being discovered in the Catacombs (an Adelaide folk club of the 1970s), went on to form the band Tidewater before launching a successful solo career.

Champion's highest-selling album is the 1995-released Aussie Christmas with Bucko & Champs with Australian country music star Colin Buchanan. In 1998, Aussie Christmas with Bucko & Champs 2 was released featuring 25 Christmas-themed songs.

Champion would play his song "That's the Thing About Football" at both the 1995 AFL Grand Final and 2002 AFL Grand Final matches.