The Skarloey Railway coaches are coaches pulled by the narrow gauge engines.
The blue narrow gauge coaches are based on the Talyllyn Railway's No. 4 coach. Agnes shares the same basis. The green coaches are based on the Llanberis Lake Railway's 4-wheeled coaches. The red narrow gauge coaches are based on the Talyllyn Railway's No. 1-3 coaches; they share the same basis as Ruth, Lucy and Jemima.
Some coaches are painted blue with cream window surrounds. Others are painted red with yellow lining, and the number "1" painted on their doors. The open are painted green with cream window surrounds.