The former professional rugby player joins The Saturdays star Frankie Sandford, Andy Murray's mum Judy and This Morning showbiz reporter Alison Hammond in the cast announced so far.
"I'm so happy to be doing the show, I cannot wait to get started," said Thom. "I'm really looking forward to my Strictly makeover – bring on Strictly and bring on the spandex!"
We're pretty sure PLENTY of the Strictly audience will second that!
Thom won ten caps for the Scotland rugby team and played at London Wasps and Glasgow Warriors. He was previously in relationships with Kelly Brook and Jessica Lowndes.
He made his Strictly announcement via the show's official Vine account, where he swapped his rugby ball for a glitter ball while looking v. gorgeous indeed...
Strictly returns to BBC One later this year.