Pontia beckerii, the Becker's white, Great Basin white, or sagebrush white, is a butterfly in the family Pieridae. It is found in western North America from Baja California, Mexico to southern British Columbia, Canada. It is mostly white with small black markings; females have more dark markings. The species is similar to other checkered whites such as, Pontia sisymbrii, Pontia protodice, and Pontia occidentalis. The wingspan is 33 to 48 millimeters.