Lachlan Keeffe (born 14 April 1990) is a professional Australian rules footballer playing for the Greater Western Sydney Giants in the Australian Football League (AFL). He previously played for the Collingwood Football Club from 2009 to 2017.
In 2008, Keeffe was signed by the Collingwood Football Club as an unregistered player and was later drafted with pick number 69 in the 2009 Rookie Draft.
At the conclusion of the 2017 season, Keeffe was delisted by Collingwood. He was subsequently signed by the Greater Western Sydney Giants as a delisted free agent in November.