Wilson's School is a boys' grammar school in Wallington, in the London Borough of Sutton, England. Admission is based on performance in an entrance test. Around 1,000 pupils are taught there.
It was founded as Wilson's Grammar School in Camberwell in 1615, moving to its present location on part of the site of the former Croydon Airport in 1975, changing its name in the process. The move was due to concerns over the size of the facilities, government policy being against grammar schools at the time, and the wish of Sutton Council to have an additional grammar school.