The eleventh season of the television series first aired in 2007. The season was narrated by Michael Angelis in the UK and Michael Brandon in the US. Soon after the episodes aired, the DVD Engines and Escapades was released, bringing the total number of episodes this season to twenty-six.
- Thomas and the Storyteller - Thomas shows a famous storyteller around, but keeps making detours to help the others.
- Emily's Rubbish/Emily and the Garbage - Emily is teased for working with Whiff, but soon learns how useful Whiff is.
- Dream On - Thomas thinks he can be stronger than Spencer.
- Dirty Work - James gets ready to be the star of the show.
- Hector the Horrid! - An aggressive coal hopper scares the engines, but Thomas learns of his secret fear.
- Gordon and the Engineer/Gordon and the Mechanic - A case of mistaken identity almost causes the engines to be stranded.
- Thomas and the Spaceship - Thomas and Percy are certain they have seen a spaceship in the sky.
- Henry's Lucky Day - Edward takes Henry's so-called "lucky trucks" and Henry goes looking for them.
- Thomas and the Lighthouse - Thomas neglects his instructions when the engines become excited about a fair.
- Thomas and the Big Bang - Thomas plays tricks on the narrow gauge engines.
- Smoke and Mirrors - Thomas confuses some deliveries for a magic show.
- Thomas Sets Sail - Thomas loses control while pulling a yacht.
- Don't Be Silly, Billy - New engine Billy ignores Thomas' advice and as a result runs out of coal and water.
- Edward and the Mail - Edward is chosen to pull the mail, but doesn't know how to do the job.
- Hide and Peep - Thomas cheats at a game of "hide and peep" with Percy at the Docks.
- Toby's Triumph - Toby is chosen to take Alicia Botti to a concert, but is worried he'll mess up.
- Thomas and the Runaway Car - A runaway car causes trouble for Thomas.
- Thomas in Trouble - Thomas leaves the fitter's yard to pick up a choir before he's completely repaired.
- Thomas and the Stinky Cheese - Thomas tries to avoid Diesel, 'Arry, and Bert while taking some stinky cheese.
- Percy and the Left Luggage/Percy and the Baggage - Percy neglects his more important job, collecting Dowager Hatt's luggage, in favour of his other more fun jobs.
- Duncan Does it All - Duncan does the other engines' jobs for a change, but causes several muddles.
- Sir Handel in Charge - Sir Handel tells the others what to do in Mr. Percival's absence, with disastrous results.
- Cool Truckings - Madge almost has an accident in the snow while taking Duncan to the Transfer Yards.
- Ding-a-Ling - Freddie tries to find a bell for Mr. Percival's bike.
- Skarloey Storms Through - Skarloey faces his fears when he has to rescue some lambs during a storm.
- Wash Behind Your Buffers - Madge tells Skarloey and Rheneas to keep clean for a concert, but can't keep clean herself.
- Donald and Douglas
- Bill and Ben
- 'Arry and Bert
- Sir Handel
- Peter Sam
- Mighty Mac
- Annie and Clarabel
- Sir Topham Hatt
- Farmer McColl
- Alicia Botti
- The Duke of Boxford
- Mr. Percival
- The Storyteller
- The Chinese Dragon
- Dowager Hatt (not named in US narration)
- Cyril the Fogman (not named)
- Harvey (does not speak)
- Henrietta (does not speak)
- Jeremy (does not speak)
- Lady Hatt (does not speak)
- Jem Cole (does not speak)
- The Mayor of Sodor (does not speak)
- Sodor Brass Band (does not speak)
- The Duchess of Boxford (does not speak)
- Murdoch (cameo)
- Neville (cameo)
- Stephen Hatt (cameo)
- Bridget Hatt (cameo)
- Farmer Trotter (cameo)
- The Refreshment Lady (cameo)
- "Dusty" Dave (cameo)
- Mrs. Percival (cameo)
- Lord Callan (cameo)
- Alice (cameo)
- The Lighthouse Keeper (mentioned)
- The Carpenter
- The Engineer
- The Magician
- The Policeman
- The School Choir (vocalises)
- This was the last season of a few things:
- Sharon Miller's last season as script editor.
- The last season to exclusively use models.
- The last season shot interlaced.
- This was also the first season of a few things as well:
- When this season aired on PBS Kids Sprout, several episodes used the intros from the eighth or twelfth seasons. This also applies to several episodes that were released on several US DVDs.
- This season was never shown on Norwegian television. It was released directly to DVD.
- In Australia, episodes from this season were released on The Best of Thomas and Friends - Volume 2 and The Complete Eleventh Series before airing on television. The season finally aired on ABC2 from September 9th, 2011.
- The US dubs of Hector the Horrid, Thomas and the Big Bang, Don't Be Silly, Billy and Percy and the Baggage were only shown on television and were never released on home video.