Kit Sebastian Connor (born 8 March 2004) is an English actor. He has appeared in the films Get Santa (2014), Rocketman (2019) and Little Joe (2019). On television, he had a recurring role in the CBBC series Rocket's Island (2014–2015) and a voice role in the BBC One and HBO series His Dark Materials. He gained recognition for his starring role as Nick Nelson in the Netflix teen series Heartstopper (2022), for which he won the Children's and Family Emmy Award for Outstanding Lead Performance in 2022.

Connor made his onscreen debut at the age of eight with minor appearances in Chickens on Sky One, the television film An Adventure in Space and Time, and the soap opera Casualty.In 2014, he starred as Tom Anderson in the holiday comedy Get Santa, and as a recurring character Archie Beckles in the CBBC series Rocket's Island.

Connor recurred as young Petya Rostov in the miniseries War & Peace and as Bob Sheehan in the miniseries SS-GB.He made his stage debut in Welcome Home, Captain Fox! at Donmar Warehouse^.

Connor had roles in the 2018 films The Mercy,The Guernsey Literary and Potato Peel Pie Society,Slaughterhouse Rulez, as well as the BBC One television film Grandpa's Great Escape.He starred as Alexander in the Old Vic Theatre production of Fanny & Alexander.

In 2019, Connor portrayed a teenaged Elton John in the musical film Rocketman, and played Joe Woodard in the drama Little Joe.That same year, he began voicing Pantalaimon in the BBC One and HBO fantasy series His Dark Materials.

In April 2021, it was announced that Connor would star opposite Joe Locke in the Netflix series Heartstopper, an adaptation of the webcomic and graphic novel of the same name by Alice Oseman. He originally auditioned for the role of Charlie, but ended up cast as the other lead, Nick Nelson.

Connor is set to star in an upcoming film adaptation of the novel A Cuban Girl's Guide to Tea and Tomorrow by Laura Taylor Namey.