Jack Minnis (1926–2005) 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.