The River Ant is a tributary river of the River Bure in the county of Norfolk, England. It is 27 kilometres (17 mi) long, and has an overall drop of 27 metres from source to mouth. It is said that the Ant was formerly known as the River Smale and that this is the origin of the name of the village of Smallburgh.

The River Bure is a river in the county of Norfolk, England, most of it in the Broads. The Bure rises near Melton Constable, 11 miles (18 km) upstream of Aylsham, which was the original head of navigation. Nowadays, the head of navigation is 10 miles (16 km) downstream at Coltishall Bridge. After Aylsham Lock and Burgh Bridge, the Bure passes through Buxton Lammas, Coltishall, Belaugh, Wroxham, Horning, past St. Benet's Abbey, through Oby, Acle, Stokesby, along the northern border of the Halvergate Marshes, through Runham and Great Yarmouth where it meets Breydon Water and flows into the sea at Gorleston.