Jon Douglas Finlayson (23 March 1938 – 12 September 2012) was an Australian stage and screen character actor and writer. He was known for his roles in the films Lonely Hearts (1982) and The Magic Show (1983).

He was also well-known from his numerous television roles, such as Colonel Archibald Spencer in Zoo Family (1985) and as James Gleeson in Snowy River: The McGregor Saga (1995–1996). He wrote sketches for The Mavis Bramston Show. He was noted for his hospitality as well as his 'Sunday Soirees' in the Melbourne show business community.