Burnham-On-Crouch, an urban district in the southeastern parliamentary division of Essex, England, 43 m. E. by N. from London on a branch of the Great Eastern railway. Pop. (1901) 2919. The church of St Mary is principally late Perpendicular, a good example; it has Decorated portions and a Norman font. There are extensive oyster beds in the Crouch estuary. Burnham lies 6 m. from the North Sea; below it the Crouch is joined on the south side by the Roch, which branches into numerous creeks, and, together with the main estuary, forms Foulness, Wallasea, Potton and other low, flat islands, embanked and protected from incursions of the sea. Burnham is in some repute as a watering-place, and is a favourite yachting station. There is considerable trade in corn and coal, and boat-building is carried on.