Sheri S. Tepper or Sheri Stewart Tepper (born 1929) is a prolific author of science fiction, science fantasy, horror and mystery novels, frequently written from a feminist perspective. Tepper has written under several pseudonyms, including A.J. Orde, E.E. Horlak, and B.J. Oliphant. Her early work was published under the name Sheri S. Eberhart.