Royal Russell School is an independent school in Coombe Lane, Surrey, South London. The Royal Russell School is a co-educational day and boarding school. The motto of the school is "Non sibi sed omnibus" meaning "Not for one's self but for all". The School is a member of the Headmasters' and Headmistresses' Conference. The patron of the school is Queen Elizabeth II.

There are currently 900 pupils at the Royal Russell School, aged between 3-18. The school occupies a site of 100 acres (0.40 km2)in gardens in a wooded estate 2 miles south-east of Croydon. The School moved the boys' part of the school from Russell Hill in Purley to the Ballards site in 1924, then moving the girls' section of the school completely to the Ballards site in 1961, and selling the original school site on Russell Hill in Purley in 1961. The Junior and Lower Junior schools are in separate buildings from the Senior School, but are still on the same site.