The Revolutionary Workers League is a small Trotskyist group formed in the United States in the late 1970s. The RWL still has about 20 active members.
The RWL was founded in 1976 by Peter Sollenberger and Leland Sanderson two former Harvard graduate students who had transferred to the University of Michigan at Ann Arbor. Although Sollenberger and Sanderson were briefly contacts of the Spartacist League, neither of them was ever a member. They organized among clerical workers at the university as well as among LGBT rights groups. In 1981 they absorbed the Socialist League (Democratic-Centralist), a group of ex-adherents of Tim Wohlforth that had been expelled from the Workers League of the United States in the mid-1970s. The SL(DC), shrinking since its formation, led by Steve Zelter, and had its main base in San Francisco. By 1982 the RWL was credited with about 40 members.
The RWL supported anti-administration forces within the United Auto Workers. They backed the United Front Caucus in the November 1982 elections in Local 600 at River Rouge, Michigan, which secured 10% of the vote. It was unclear how many members the RWL had within Local 600, if it had any at all. The RWL also worked within the Peace & Freedom Party in California. There they formed a bloc with members of the Internationalist Workers Party (Fourth International) at the August 1984 convention against a majority dominated by the Communist Party USA.
Negotiations had been opened up between the RWL and the IWP(FI) since October 1982. The RWL participated in the IWP(FI)s Emergency National Trotskyist Conference in 1983 and accepted the IWP(FI)s invitation to participate in the Morenoist International Workers League (Fourth International) world congress in 1984. the RWL had been affiliated with Alan Thornetts Trotskyist International Liaison Committee from the late 1970s until at least after the Falklands War of 1982.