Kit Sebastian Connor (born 8 March 2004) is an English actor. He gained recognition for starring as secondary school student Nick Nelson in the Netflix teen series Heartstopper (2022–2024) and its series-finale film, Heartstopper Forever (2026). He won the inaugural Children's and Family Emmy Award for Outstanding Lead Performance for the role. He received another nomination for the third season.

Connor appeared in the films Get Santa (2014), Rocketman (2019), and Little Joe (2019), had a recurring role in the CBBC series Rocket's Island(2014–2015), and voice roles in the series His Dark Materials (2019–2022) and the film The Wild Robot (2024), a performance for which he garnered an Annie Award nomination. He subsequently starred as Romeo in a Broadway adaptation of Romeo & Juliet in 2024, a performance for which he won a Theatre World Award and nominations for a Drama League Award and an Outer Critics Circle Award, and in the film Warfare (2025), a performance for which he won a British Independent Film Award.