The Metro Green Line is an 11-mile (18 km) light rail line that connects the central business districts of Minneapolis and Saint Paul in Minnesota as well as the University of Minnesota. An extension is under construction that will extend the line to the southwest connecting St. Louis Park, Hopkins, Minnetonka and Eden Prairie. The line follows the path of former Metro Transit bus route 16 along University Avenue and Washington Avenue. It is the second light-rail line in the region, after the Blue Line, which opened in 2004 and connects Minneapolis with the southern suburb of Bloomington.

Metro is a transit network in Minnesota serving the cities of Minneapolis and Saint Paul. It also provides service to some suburban areas. As of 2022, the system consists of two light rail lines and five bus rapid transit (BRT) lines all of which are operated by the local public transit company: Metro Transit. The five lines connect Downtown Minneapolis and St Paul with the Bloomington, Minneapolis-St Paul International Airport, Roseville, Richfield, Burnsville and Brooklyn Center.