Dean Close School is a co-educational independent school in Cheltenham, Gloucestershire, England. The school is divided into pre-prep, preparatory and senior schools located on separate but adjacent sites outside Cheltenham town centre, occupying the largest private land area in the town. Students may be enrolled as young as 3 in the pre-preparatory school, and continue through to 18 at the senior school. The school adheres to National Curriculum guidelines, while retaining independent status as a selective, fee-paying institution. Dean Close is a public school, and a member of the Headmasters' and Headmistresses' Conference.

The school, originally "The Dean Close Memorial School", was founded in 1886 in memory of local former Rector of Cheltenham and Dean of Carlisle Cathedral, Rev Francis Close (1797–1882). Alumni include the poet James Elroy Flecker, whose father was the school's first headmaster (the old Flecker Hall was named after him), and the artist Francis Bacon.

In the First World War more than 120 former pupils were killed; their names, along with the names of young men killed during the Second World War are recorded in the memorial chapel, which was consecrated in 1923.