AFL chief executive Andrew Demetriou has announced that he will quit the role at the end of the 2014 season, his 11th at the helm.

Demetriou, 52, made the announcement at a media conference alongside AFL commission chairman Mike Fitzpatrick at AFL House.

Demetriou has overseen a period of great growth and expansion.

The wealth of the game has grown enormously through revenue from big TV deals while the competition has widened to 18 teams with the addition of the Gold Coast Suns and Greater Western Sydney.

However, Demetriou has come in for increased criticism in the past year for his handling of the Essendon supplements scandal which prompted an on-going anti-doping investigation.