Upper Clapton is a district in the London Borough of Hackney. It is bounded by the Hackney districts of Stamford Hill to the west, Lower Clapton and Lea Bridge to the south and the Haringey district of South Tottenham to the north. To the east is the River Lea (spelled Lea or Lee), on the other side of which is the expanse of the Walthamstow Marshes, part of which is in the Lee Valley Park.
As is frequently the case with London districts, these boundaries have become uncertain because of the meeting of the developing expansion of the original settlements. Western parts of the area are often considered part of a wider Stamford Hill, understandable perhaps because of the public transport junction and shopping area at Stamford Broadway, and that the Hassidic Jewish community identified as being located in Stamford Hill extends into Upper Clapton.