Thomas & Friends: Journey Beyond Sodor is a 2017 British animated musical adventure film and the twelfth feature-length special based on the British television series Thomas & Friends. The film was produced and distributed by Mattel Creations with animation production by Canadian-based Jam Filled Toronto. The movie centres on Thomas being held captive in a Steelworks within the mainland after taking a load meant for his friend James.

The film stars John Hasler (UK) and Joseph May (US) as the voice of Thomas, and guest stars such as Hugh Bonneville who plays the role of Merlin. The film also deals with many traits that children have such as autism, through the Experimental Engines.

Initially released in the United States in early August, the film saw a limited theatrical release in the United Kingdom through National Amusements before being released on DVD.