Stan Weir (1921-2001) was an educator and labor activist from California. Born in Los Angeles in 1921, Weir had a long career in across a variety of industries, working as a seaman, autoworker, house painter, Teamster, grocery clerk, publisher, and university professor. As a young man Weir briefly attended Los Angeles City College for a term before he transferred to University of California-Los Angeles (UCLA). He later left UCLA to work as a cadet on a freighter along the Pacific Coast. Weir worked a number of jobs along the California coast, including a position as a merchant seaman where he became involved as a young union leader. As a union organizer Weir often found himself at odds with union bosses, and ultimately lost his job as a merchant seaman in 1945 for fighting against the Sailors Union of the Pacific's policy of allowing segregation. In 1959 Weir began working as a longshoreman in San Francisco, where he was hired as a B class worker or "B-man" with the International Longshore and Warehouse Union (ILWU).

The ILWU had stopped admitting full-time members in 1948 and instead adopted a policy of bringing on new laborers under the B class registration status, a second-class industry classification. Workers hired as B-men paid full membership dues, but were not allowed full membership rights or protections as workers. In 1963 the union started a process of upgrading all B-men to an A registration status, however eighty-two workers who held B class registration status were fired and expelled from the union during this process. Weir was among the eighty-two longshoremen who lost their job in 1963. Weir and a number of other B-men filed a complaint in the US District Court in San Francisco, claiming that they had been expelled for political reasons rather than issues related to the quality of their work. For the next seventeen years, they fought to regain their right to work on the shorefront until the Supreme Court ultimately refused to hear their case.

Following his expulsion from the ILWU, Weir earned a Ph.D. at the Union Institute of Cincinnati and later worked as a professor of labor relations at the University of Illinois Champaign until he retired in 1980. Weir also founded the small press Singlejack Books with Robert Miles in 1977, which published labor related fiction and non-fiction. The company dissolved in 1987. Weir continued to write later into his life, and although he died in 2001, the University of Minnesota Press published his book Singlejack Solidarity in 2004.