Dulwich Prep & Senior (DPS), formerly known as Dulwich Prep London (2011-2024) and Dulwich College Preparatory School (1885-2011), is an independent school in Dulwich, south London, England for boys aged 2 - 16 years, with a co-educational Nursery.

At the suggestion of the Master of Dulwich College, Thomas Mason opened Dulwich College Preparatory School (DCPS) for 13 pupils in January 1885.

In 1938 headmaster John Leakey established an evacuation camp in the orchard on his father-in-law's land at Coursehorn, near Cranbrook, Kent, where the affiliated Dulwich Prep Cranbrook still is today.

[1] The school changed its name in September 2011 to Dulwich Prep London, having been previously called Dulwich College Preparatory School.

Despite their close proximity and relationship, the school has no official link with Dulwich College, which has its own junior school for students between ages 7 and 13.