The River Ant is a river on the Norfolk Broads in The Broads National Park in Norfolk, England.

It rises near Honing, flows through Wayford Bridge, Dilham and Barton Broad, through Irstead, past How Hill and through Ludham Bridge and flows into the Bure west of St. Benet's Abbey.

A special type of Norfolk wherry was used on the Ant, measuring 50' x 12' max.

The Ant Broads & Marshes NNR is a National Nature Reserve.

The North Walsham & Dilham Canal is the canalisation of the Ant and joins it at Smallburgh junction.