The Hermit of Treig is a Scottish documentary film, directed by Lizzie MacKenzie and released in 2022. The film is a portrait of Ken Smith, an elderly man who has spent 40 years living in relative isolation in a cabin on the shores of Loch Treig in the Scottish Highlands.The film premiered on 5 March 2022 at the Glasgow Film Festival, with Smith in attendance as his first time visiting Glasgow in decades. It was released commercially on 25 March.