| JJohn HaslerThomas (voice) | Thomas (voice) |
 Keith WickhamHenry / Gordon / Salty / Den / Norman / Harold / The Fat Controller / Bertie / Mr. Bubbles / Various (voice) | Henry / Gordon / Salty / Den / Norman / Harold / The Fat Controller / Bertie / Mr. Bubbles / Various (voice) |
 Rob RackstrawJames / Flynn / Big Mickey / Monty / Knapford Stationmaster / Passenger / Troublesome Trucks (voice) | James / Flynn / Big Mickey / Monty / Knapford Stationmaster / Passenger / Troublesome Trucks (voice) |
 Nigel PilkingtonPercy (voice) | Percy (voice) |
 Teresa GallagherEmily / Belle / Annie / Clarabel / Teacher / Albert's Wife (voice) | Emily / Belle / Annie / Clarabel / Teacher / Albert's Wife (voice) |
 Steven KynmanPorter / Dart / Paxton (voice) | Porter / Dart / Paxton (voice) |
| YYvonne GrundyNia (voice) | Nia (voice) |
 Rachael Louise MillerRebecca (voice) | Rebecca (voice) |
 Kerry ShaleDiesel / Max / Troublesome Trucks / Kevin (voice) | Diesel / Max / Troublesome Trucks / Kevin (voice) |
| BBob GoldingSidney (voice) | Sidney (voice) |
| MMatt WilkinsonCranky / Winston / Wellsworth Station Workman (voice) | Cranky / Winston / Wellsworth Station Workman (voice) |
 Lucy MontgomeryCarly (voice) | Carly (voice) |
 Colin McFarlaneBulgy (voice) | Bulgy (voice) |
| CChristopher RaglandPassenger / Troublesome Trucks (voice) | Passenger / Troublesome Trucks (voice) |
 David BedellaVictor (voice) | Victor (voice) |
 Tina DesaiAshima / Fashion Designer (voice) | Ashima / Fashion Designer (voice) |
 Nikhil ParmarGrumpy Stationmaster / Friendly Stationmaster (voice) | Grumpy Stationmaster / Friendly Stationmaster (voice) |
 Sheena BhattessaNoor Jehan / Charubala / Monkey (voice) | Noor Jehan / Charubala / Monkey (voice) |
 Sanjeev BhaskarShankar (voice) | Shankar (voice) |
 Shane JacobsonShane (voice) | Shane (voice) |
 Genevieve McCarthyAubrey (voice) | Aubrey (voice) |
| TTim BainAiden / Passengers / Australian Railway Workers (voice) | Aiden / Passengers / Australian Railway Workers (voice) |
 Dan LiYong Bao (voice) | Yong Bao (voice) |
 Chipo ChungHong-Mei (voice) | Hong-Mei (voice) |
| SSiu-see HungAn-An / Passenger (voice) | An-An / Passenger (voice) |
| WWindson LiongYin-Long / Passenger (voice) | Yin-Long / Passenger (voice) |
 Jules de JonghCaitlin (voice) (uncredited) | Caitlin (voice) (uncredited) |
 William HopeEdward (voice) (uncredited) | Edward (voice) (uncredited) |
