The 19th of April Movement , or M-19, was a Colombian urban guerrilla movement active in the late 1970s and 1980s. After its demobilization in 1990, it became a political party, the M-19 Democratic Alliance Alianza Democrática M-19, or AD/M-19.

The M-19 traced its origins to the allegedly fraudulent presidential elections of 19 April 1970, where the left-wing