Thomas & Friends: The Adventure Begins is a 2015 British animated adventure comedy film produced by HIT Entertainment and animated by Arc Productions. It serves as a prequel to the British television series, Thomas & Friends. It is based on the first two books of The Railway Series: The Three Railway Engines and Thomas the Tank Engine, which were previously adapted into the first seven episodes of the show's first season in 1984. It commemorates the 70th anniversary of The Railway Series, making it the first installment to officially adapt a Railway Series story since Series 4.

Jam Filled Entertainment is a Canadian animation studio based in Ottawa, Ontario, and a division of Boat Rocker Media. The company is best known for animating Thomas & Friends and Nicktoons.