Tranent is a town in East Lothian, in the south-east of Scotland. The town lies 6 miles from the boundary of Edinburgh, and 9.1 miles from the city centre. It lies beside the A1 road, the A1 runs through the parish splitting the parish from its associated villages and hamlets namely Meadowmill and the port of the parish Cockenzie. The original main post road ran straight through the town until the new A1 was built. Built on a gentle slope, about 90 metres (300 ft) above sea level it is one of the oldest towns in East Lothian. The population of the town is approximately 12,140, an increase of over 4,000 since 2001. Tranent was formerly a major mining town, but now serves as a commuter town for Edinburgh.

The Tranent to Cockenzie Waggonway was an early waggonway, possibly the first in Scotland, opened in 1722. It was 2+1⁄2 miles (4 km) miles long and connected coal pits at Tranent with the salt pans at Cockenzie and harbour at Port Seton in East Lothian, Scotland. The track was wooden, and wagons were drawn by horses. The Battle of Prestonpans in 1745 was fought across the line.