Max Shachtman (/ˈʃɑːktmən/; September 10, 1904 – November 4, 1972) was an American Marxist theorist. He evolved from being an associate of Leon Trotsky to a social democrat and mentor of senior assistants to AFL-CIO President George Meany.
Shachtman was born to a Jewish family in Warsaw, Poland, which was then part of the Russian Empire. He emigrated with his family to New York City in 1905.
At an early age, he became interested in Marxism and was sympathetic to the radical wing of the Socialist Party. Having dropped out of City College, in 1921 he joined the Workers Council, a Communist organization led by J.B. Salutsky and Alexander Trachtenberg which was sharply critical of the underground form of organization of the Communist Party of America. At the end of December 1921 the Communist Party launched a "legal political party," the Workers Party of America, of which the Workers' Council was a constituent member. Shachtman thereby joined the official Communist movement by virtue of the Workers' Council's dissolution by merger.