The Wisconsin Avenue Limited Line, designated Route 37, was a weekday peak-hour bus route operated by the Washington Metropolitan Area Transit Authority between Friendship Heights station of the Red Line of the Washington Metro and Archives station of the Green and Yellow Lines of the Washington Metro.

The line provided limited stop service to supplement routes 30N, 30S, 31, and 33 during the weekday peak-hours along the busy Wisconsin Avenue corridor.

WMATA later backed out the proposals due to customer pushback on April 2, 2020.

[3][4][5][6] The proposed elimination was brought back up on September 26, 2020 due to low federal funding.

Route 37 had not operated since March 13, 2020 due to Metro's response to the COVID-19 pandemic.