Grace Holmes Carlson (November 13, 1906 – July 7, 1992) was an American Marxist politician.

Grace Holmes Carlson was born on November 13, 1906, in Saint Paul, Minnesota, and studied in local Catholic schools.

[2] In 1940, Carlson was the Socialist Workers Party candidate for United States Senator in Minnesota,[1] receiving almost 9,000 votes.

[3] In 1941, as a leading member of the Socialist Workers Party she was imprisoned under the Smith Act together with Farrell Dobbs and many other SWP leaders for opposing the US involvement in World War II.

James P. Cannon, the central leader of the SWP famously penned the article "How We Won Grace Carlson and How We Lost Her" following her resignation; it focused on the extreme right-wing pressures of the McCarthy period as the material basis for Carlson's departure.