Jack Minnis (died 2005) was an American activist, and the founder and director of opposition research for the Student Nonviolent Coordinating Committee in the Civil Rights Movement era. Minnis researched federal expenditures and state and local subversion of racial equality. Minnis was white, but remained affiliated with SNCC even after it adopted a "blacks only" personnel policy, its only white employee for a long time. He helped to train such workers as Stokely Carmichael, Marion Barry, and John Lewis.
Minnis had been hired by the Southern Regional Council to evaluate their Voter Education Project, which included voter registration efforts in the South in 1962. Minnis was fired for what he later said were justifiable political reasons, and suggested that SNCC start its own research unit to aid its activist effort. Jack Minnis ran SNCC's research department out of the Atlanta office, but traveled widely in the South to assist local efforts to register voters. By 1965, Minnis was producing a weekly mimeographed opposition research-based newsletter, Life in the Great Society with Lyndon, which made public some of the activities of President Lyndon B. Johnson that were not covered by the mainstream media. These weekly reports played a significant role in the radicalization of SNCC, the Southern Christian Leadership Conference, and CORE field staff.
Minnis watched closely the movement of federal money toward corporate interests; he remarked on such various incidents as Johnson's appointment of a Merck policymaker to a board that would determine Merck's culpability for false claims with its Sucrets coughdrop product, and an Agency for International Development project that was possibly a front for CIA activity.