Thomas Hamilton Forrester is a fictional character in the CBS soap opera The Bold and the Beautiful, portrayed by Drew Tyler Bell from January 2004 to 2005 in a contract role. He has since made many guest appearances since 2005.
In early 2004, a teenaged Thomas fell for Forrester intern Caitlin Ramirez (Kayla Ewell), much to the disapproval of Caitlin's father, Hector (Lorenzo Lamas). When Caitlin left Thomas for his step-uncle, Rick (then played by Justin Torkildsen, now Kyle Lowder), a devastated Thomas took comfort with the much older Amber Moore (Adrienne Frantz), who had a reputation as a gold-digger. Thomas' sexual relationship with Amber called for B&B producers to age the character of Thomas from 16 to 18.
Caitlin and Rick soon broke up, and soon Amber and Thomas did as well. Thomas and Caitlin reunited, but were soon torn apart again by Thomas' strong friendship with illegal immigrant Gabriela "Gaby" Moreno (Shanelle Workman). In order to help Gaby stay in the country, Thomas married her. When Ridge and Taylor found out, they were divided by it. Ridge wanted the marriage annulled immediately, while Taylor was more accepting of the relationship. She allowed the couple to move into the Forrester mansion on the condition that they didn't have sex.
Thomas and Gaby resolved to keep their promise to Taylor, but the temptation proved too strong and they eventually gave in to their passion. Phoebe (then played by Addison Hoover) found the condom wrapper, which Thomas had dropped in the hall. She put two and two together and informed Taylor. A furious Taylor then confessed all to the immigration department and they arrived to take her away. However, Gaby's lawyer arrived in time to stop them.
Taylor and Gaby's bitter rivalry came to an end when it was revealed that Taylor had gone to great lengths to keep her in the country, and succeeded. Gaby realised that Taylor had been right about the marriage and agreed to end it. After his and Gaby's marriage was annulled, Gaby left town.
In 2006, Thomas left for college, returning regularly for family events.