Joseph William Locke is a Manx actor. He is known for his lead role as high school student Charlie Spring in the Netflix teen series Heartstopper (2022–present), for which he received a nomination for the inaugural Children's and Family Emmy Award for Outstanding Lead Performance.

Charlie Spring is a primary character in the Alice Oseman graphic novel series Heartstopper as well as its 2022 Netflix adaptation, where he is portrayed by Joe Locke. His first appearance was in the 2014 novel Solitaire.