Lower Beeding is a village and civil parish in the Horsham District of West Sussex, England. The village lies on the B2110, B2115 and A281 roads southeast from Horsham, and is centred on Holy Trinity Church and The Plough public house, where the B2115 meets the B2110. The parish hamlets are Crabtree to the south of the village, and Ashfold Crossways and Plummer's Plain to the north-east. At Plummer's Plain there is a spring that is the official source of the River Ouse, which eventually reaches the sea at Newhaven.