Thomas Welling is an actor, director, and producer. He is best known for his role as Clark Kent in The WB (now The CW) superhero drama Smallville (2001–2011). He also co-starred in the third season of the Fox fantasy comedy-drama Lucifer as Lt. Marcus Pierce/Cain (2017–2018).

In 1997, Tom began modelling men's clothing for several popular brands including Abercrombie & Fitch, Dior, and Thomas Burberry. In 2000, he transitioned to television. He has been nominated and received several awards for his role as Clark Kent. In 2001, he had a recurring role as Rob "Karate Rob" Meltzer in the second season of the CBS legal drama Judging Amy. His films include Cheaper by the Dozen (2003), Cheaper by the Dozen 2 (2005), The Fog (2005), Draft Day (2014), and The Choice (2016). In 2022, he starred as Samuel Campbell in the dark fantasy series The Winchesters. He has also been involved behind the camera as an executive producer and a director.