Thomas Sangster (b. 1990) is an English actor who provides the voice of Ferb Fletcher in Disney Channel's Phineas and Ferb and its interstitial spin-off Take Two with Phineas and Ferb.
His character appeared in a 2011 Take Two segment starring Miss Piggy. During Piggy's interview with Phineas, Ferb translates a question in Pig Latin.
Sangster has also appeared in Love Actually as Liam Neeson's step-son, in a two-part 2007 episode of Doctor Who, Nanny McPhee (with Emma Thompson and Derek Jacobi), and as Jojen Reed in HBO's Game of Thrones.