Edmonton Light Rail Transit, commonly referred to as the LRT, is a light rail system in Edmonton, Alberta. Part of the Edmonton Transit Service (ETS), the system has 18 stations on two lines and 24.3 km (15.1 mi) of track. As of 2018, it is number seven on the busiest light rail transit systems in North America, with over 110,000 daily weekday riders.

The ETS started operation of the original LRT line in 1978, expanded by 2010 into the Capital Line, running between Clareview in Edmonton's northeast and Century Park in Edmonton's south end. The first phase of the newer Metro Line started service between the University of Alberta campus and hospital in Edmonton's southcentral and the Northern Alberta Institute of Technology northwest of downtown Edmonton in 2015, with further expansion to north Edmonton and neighbouring city of St. Albert planned into the future. Construction of the first phase of the 27-kilometre (17 mi) Valley Line, from downtown Edmonton to Mill Woods in southeast Edmonton, began in spring 2016, and there are future plans to extend into west Edmonton.