Rattle Brook is a brook in north Dartmoor in Devon in south-west England. It is situated East of Great Links Tor, and rises by the Rattlebrook Peatworks on remote moorland in the western section of Dartmoor National Park. It flows past Bleak House with Green Tor to the east and Higher and Lower Dunna Goat Tors to the west. It runs between Amicombe Hill and Rattlebrook Hill to join the River Tavy at the mouth of Tavy Cleave.