Myra Tanner Weiss (May 17, 1917 – September 13, 1997) was an American Communist following Trotskyism, and a three time U.S. vice presidential candidate of the Socialist Workers Party (SWP).

[3] Myra Tanner Weiss was the SWP's vice-presidential candidate in 1952, 1956 and 1960, with Farrell Dobbs running for President of the United States.

[6] Beginning in the 1950s, a split developed in the SWP between the supporters of Murry and Myra Weiss on one side and Farrell Dobbs and Tom Kerry on the other.

[7] The two groups argued over their approach to the Cochranites, the supporters of Bert Cochran who advocated for closer work within the Communist Party.

[8] Working with James P. Cannon, the Weisses and their supporters, known as the Weissites, attempted to preserve the independence of the SWP as a Trotskyist organization outside of the Communist Party.