T
- Derek Tangye, writer who wrote the "Minack Chronicles"
- Nigel Tangye, airman, author and hotelier at Newquay
- Richard Tangye, engineer
- Roger Taylor, Rock drummer with the group Queen
- E. V. Thompson author of historical novels
- Sam Toy, former chairman of the Ford Motor Company, UK
- Mike Trebilcock, footballer who won the FA Cup in 1966 with Everton
- David Treffry, colonial administrator and international financier
- Giant Tregeagle, lawyer
- Jack Trelawny, writer for children
- Jonathan Trelawny, Anglican bishop and antagonist of James II
- Petroc Trelawny, journalist and BBC Radio 3 presenter
- Henry Trengrouse, inventor of a rocket-powered maritime rescue system
- Silvanus Trevail, architect, mayor of Truro and President of the Society of Architects
- Raleigh Trevelyan, author and publisher
- Richard Trevithick, inventor, engineer and builder of the first steam locomotive
- Elizabeth Trewinnard, Lady Killigrew, aristocrat who was convicted of piracy during the reign of Queen Elizabeth I
- Tristan, hero of the Tristan and Iseult legend, nephew of Mark of Cornwall
Read more about this topic: List Of People From Cornwall