This is a list of people whose primary vocation did not involve mathematics (or any similar discipline) yet made notable, and sometimes important, contributions to the field of mathematics.

• Robert Ammann (programmer and postal worker)
• Harlan J. Brothers (teacher and inventor)
• Sir James Cockle (judge)
• Martin Demaine (goldsmith and glass artist)
• Hermann Grassmann (school teacher)
• James A. Garfield (politician)
• Kurt Heegner (high school teacher)
• F. H. Jackson (navy chaplain)
• Alfred Bray Kempe (lawyer)
• Kathleen Ollerenshaw (politician)
• Marjorie Rice (homemaker)
• Gaston Terry (civil servant)

See also mathematician.