The Annet Burn rises in the hills of Kilmadock Parish to the northeast of Callander in Stirling Council Area. It flows southeastwards in two headstreams down the southern slopes of Uamh Bheag and on through the Braes of Doune before joining the River Teith below Burn of Cambus, 1½ miles (2.5 km) west northwest of Doune. It is 6 miles (10 km) in length and has a number of attractive cascades.