Zemysina is a genus of marine bivalve mollusc in the family Ungulinidae. It contains the following species:^[1]

• †Zemysina decipiens (Deshayes, 1857)
• †Zemysina densisculpta (Marwick, 1960)
• Zemysina globularis (Lamarck, 1818)
• Zemysina globus (H. J. Finlay, 1926)
• Zemysina gouldi (Yokoyama, 1920)
• †Zemysina guyerdeti (Deshayes, 1866)
• Zemysina impolita (S. S. Berry, 1953)
• Zemysina inconspicua (R. A. Philippi, 1845)
• †Zemysina ingens (Deshayes, 1857)
• †Zemysina lamberti (Deshayes, 1857)
• Zemysina lunaris (Yokoyama, 1927)
• Zemysina orbella (A. Gould, 1851)
• Zemysina pisiformis (Deshayes, 1855)
• Zemysina semiasperoides (Nomura, 1932)
• Zemysina sphaericula (Deshayes, 1855)
• †Zemysina striatina (Deshayes, 1857)
• Zemysina striatula (H. J. Finlay, 1926)
• Zemysina subquadrata (P. P. Carpenter, 1856)