Jeffrey Thomas (born 1945) is a Welsh-born New Zealand actor and writer, best known for his film, television and stage roles.

While at Oxford, Thomas met and married a New Zealander, and after completing his studies they moved initially to Australia (where he lectured at La Trobe University) and then, in 1976, to Wellington.

[1] Thomas rose to prominence in New Zealand in the late 1980s with the lead role of Inspector "Sharky" Finn in the TVNZ police drama series Shark in the Park, and is also well known for his roles in two long-running New Zealand soap operas, Mercy Peak and Shortland Street, and his distinctive voice can be heard narrating a large number of documentaries.

[1] Internationally, Thomas is known for his starring roles of Jason in Hercules: The Legendary Journeys and narrator in Costa Botes's and Peter Jackson's mockumentary Forgotten Silver.

[2] In 2015 Thomas starred in The Dead Room as Scott Cameron, a sceptical scientist investigating paranormal activity in a New Zealand farmhouse.