Graham Clarke is an actor and producer. He appeared in Experiment #820 Space Mutiny (in which he was credited as "Graham Clark"). Much like his co-star James Ryan, he often played soldier or villain roles in South African film productions with occasional appearances on US shows which were filmed overseas.

He also played the villain in the 1990 film Laser Mission (with Ernest Borgnine), which became a RiffTrax presentation in 2011. In both films featured, he also co-starred with Guy Pringle.