The Grassroots Party was a political third party in the United States established in 1986 to oppose drug prohibition. The party shared many of the progressive values of the Farmer-Labor Party but with an emphasis on cannabis/hemp legalization issues, and the organization traced their roots to the Youth International Party of the 1960s.

The Grassroots—Legalize Cannabis Party (G—LC) is a political third party in the U.S. state of Minnesota created by Oliver Steinberg in 2014 to oppose cannabis prohibition. G—LC Is a democratic socialist party with a background branching from the Grassroots Party established in 1986.