Ryan Oliver Sampson is an English actor from Rotherham, South Yorkshire.

He also played Luke Rattigan in the Series 4 two-part story of Doctor Who, "The Sontaran Stratagem" and "The Poison Sky".

Prior to After You've Gone, he appeared in Wire in the Blood, in 2003, In Denial of Murder, Heartbeat and Holby City in 2006.

He appeared in the BBC Three pilot The Things I Haven't Told You and had a role in two episodes of the 2008 series of Doctor Who, playing the young American genius Luke Rattigan in "The Sontaran Stratagem" and "The Poison Sky".

Sampson confirmed that he is gay via Twitter in February 2019, publishing a photo of himself with his boyfriend.