Antonia Laura Thomas is a British actress. She is best known for her roles as Alisha Daniels in the E4 comedy-drama series Misfits, Evie Douglas in the Channel 4/Netflix comedy series Lovesick and Dr. Claire Browne in the ABC drama series The Good Doctor.

Lovesick is a British sitcom created by Tom Edge which was first broadcast on Channel 4 in October 2014 and stars Johnny Flynn, Antonia Thomas, Daniel Ings, Hannah Britland and Joshua McGuire. After the show was originally aired on Channel 4, it was made available by Netflix, who then commissioned a second season globally on 17 November 2016, where it was billed as a Netflix Original. The show concluded with a third season, which was released exclusively on Netflix on 1 January 2018.