The Leaderfoot Viaduct, also known as the Drygrange Viaduct, is an architecturally impressive railway bridge spanning the River Tweed near Melrose in the Scottish Borders. It was completed in 1865 for the Berwickshire Railway branch line and connected the 'Waverley Route' running between Edinburgh and Hawick, to Duns and Reston. 

It is situated close to the Drygrange Old Bridge, which was built in 1780.