The Manx Electric Railway is an electric interurban tramway connecting Douglas, Laxey and Ramsey in the Isle of Man. It connects with the Douglas Bay Horse Tramway at its southern terminus at Derby Castle at the northern end of the promenade in Douglas, and with the Snaefell Mountain Railway at Laxey. Many visitors take an excursion on the trams. It is the oldest electric tram line in the world whose original rolling stock is still in service.

Douglas is the capital city and largest settlement of the Isle of Man, with a population of 26,677 (2021) and an area of 10.5 km2. It is located at the mouth of the River Douglas, and on a sweeping bay of two miles. The River Douglas forms part of the city's harbour and main commercial port.