The Circus Train is a very colourful train that is very popular with all of the engines. The train has special cattle trucks used to carry horses, and trucks, flatbeds and vans used to carry special circus goods and equipment.
There are also Coaches for circus performers to travel in. Two of these coaches were seen in the book Henry and the Elephant. The coaches are painted yellow with red lining and with "Circus" written on their sides in blue. They appeared again in another Henry and the Elephant book. This time with red lining and "Miller Circus" written on their sides in red.
- Season 4 - Henry and the Elephant
- Season 8 - Thomas and the Circus
- Season 9 - Thomas Tries His Best
- Season 10 - Percy and the Funfair
- Season 12 - Rosie's Funfair Special
- Between the ninth and twelfth seasons, the circus wagons had their "Circus" logos removed to become Funfair Trucks.
- Some of the circus train was on display at Drayton Manor, but is currently now in storage.
- The circus flatbeds were first white in the fourth season, they were then gold and red since the eighth season.
- Toad's model, without a face, was used for the brake van of the Circus Train in the eighth season episode Thomas and the Circus.
- The vans appear to be Conflats with the top part of a ventilated van on top of it.
- The Circus's logo is seen on the TrackMaster Funfair Car.
- Wooden Railway (discontinued)
- Take-n-Play (discontinued)
- Hornby (discontinued)
- Thomas Engine Collection Series (discontinued)
- Nakayoshi (discontinued)
- Capsule Plarail