Billy Hartman (born 1957) is a Scottish actor, well known for playing the part of Terry Woods on ITV's Emmerdale from 1995 until his character was killed off in 2011.
He also played a small role in the film Highlander. He played the part of Dougal MacLeod, cousin of Connor McLeod.
Under the name GBH, Hartman was the host of the rock 'n' roll revival television show Oh Boy in 1979.
Hartman played a teenager in 1980s American horror film Slaughter High. Hartman also appeared as Isaac Talentire in the original west end production of Howard Goodall's musical The Hired Man.
Hartman appeared as Dave Slade in the 1994 Heartbeat episode "Wild Thing"; he played Dave Slade, whose dog was attacking sheep.
On 26 October 2013, Hartman played the role of Graham O'Reilly on Casualty.