Graeme 'Jerker' Jenkin (born 5 September 1945) is a former Australian rules footballer who played with Collingwood and Essendon in the VFL during the 1960s and 1970s.
Jenkin is best remembered for being the player that Carlton's Alex Jesaulenko took a spectacular mark over in the 1970 Grand Final, promoting the famous call of "Oh Jesaulenko, you beauty!".
A ruckman, Jenkin first appeared for Collingwood in the 1963 season and after managing just three games that year missed all of 1965 with a broken leg. He returned in 1966 but couldn't break into their finals side and with first choice ruckman Ray Gabelich retiring that year he looked like getting more regular game time. The emergence of Len Thompson again relegated him to second ruckman but he played full seasons in 1970 and 1971.
In 1974 he was traded to Essendon in a swap for John Williams but struggled in his time there with injury.
He is the subject of a song by the Melbourne group TISM titled "The Back Upon Which Jezza Jumped", included on the album Gentlemen, Start Your Egos.