Weald Brook is a water course in the parliamentary constituency of Hornchurch and Upminster. Weald Brook flows into the River Ingrebourne.

Weald Brook is the boundary between Romford and South Weald, to the east, flows south into Hornchurch, continuing as the River Ingrebourne to the Thames.

• Romford: Introduction, A History of the County of Essex. Vol. 7 (1978), pp. 56–64. Retrieved 21 March 2013.

51°37′06″N 0°14′47″E / 51.6183°N 0.246392°E / 51.6183; 0.246392