<P> Thorne Forrester is a fictional character on CBS soap opera The Bold and the Beautiful . The character was played by Clayton Norcross from the show 's premiere in 1987 until 1989 , by Jeff Trachta from 1989 until 1996 and Winsor Harmon from 1996 to 2016 . In September 2017 , Harmon announced that the role of Thorne was to be recast , and several days after , it was announced that daytime veteran Ingo Rademacher had been cast in the role ; he made his first appearance on November 27 , 2017 . </P>
who played the original thorne on bold and the beautiful
Clayton Norcross Jeff Trachta Winsor Harmon