Sir Topham Hatt or The Fat Controller may refer to:
- Sir Topham Hatt - controller of the North Western Railway.
- Sir Topham Hatt (song) - a song from the fifth season.
- Sir Topham Hatt (Series 14 song) - a song from the Misty Island Rescue DVD/Blu-ray release.
*Disclosure: Some of the links above are affiliate links, meaning, at no additional cost to you, Fandom will earn a commission if you click through and make a purchase. Community content is available under CC-BY-SA unless otherwise noted.