Schwagerina is an extinct genus of fusulinacean Foraminifera that is used as an Early Permian index fossil.

The overall shape of the shell or test is fusiform to subcylindrical, the spirotheca, or outer test wall, is thick, and composed of tectum and alveolar keriotheca;[clarification needed] the septa are fluted throughout the length of the shell, intense to top of chambers in some, only in lower parts in others; axial fillings highly variable, chomata distinct or thin and discontinuous.

Shell inflated-fusimform; first two or three volutions tightly coiled, outer ones inflated; spirotheca as in Schwaterina.

Septa are fluted at the base, close speced at first, wide spaced later.

Spirotheca as with Schwagerina, moderately thin in the tightly coiled portion and next one or two volutions, becoming thick and more coarsely alveolar in the outer two or three.