Greg Mardon Somerville is a New Zealand rugby union player.

Somerville's nickname is Yoda, after the fictional character from Star Wars due to their resemblance.

[1] Somerville left New Zealand in late 2008, having signed a two-and-a-half-year deal with the Guinness Premiership team Gloucester.

In 2010 he left Gloucester for the Melbourne Rebels, with whom he spent the 2011 season before retiring.

Somerville's sporting hero is Buck Shelford, who, he says, "was a tremendous leader for the All Blacks and an outstanding front-rower.