Gay Hamilton (born 29 April 1943, Hamilton, South Lanarkshire) is a Scottish actress.
Her filmography notably includes Stanley Kubrick's Barry Lyndon and Ridley Scott's The Duellists.
In the late 1960s/early 1970s, she was love interest and later wife of Detective Chief Superintendent John Watt (played by Frank Windsor) in the TV series Softly, Softly and its Taskforce spin-off.
She appeared in two episodes of the ITC series Man in a Suitcase (1967), and played the wife of Anton Zoref (Ian McShane) in the Space: 1999 episode "Force of Life".
She more recently played Edwina Dunn in EastEnders and Maisie McLintock in Doctors.