William Stevens Perry was a 19th-century bishop of the Protestant Episcopal Church in the United States of America and an educator. He served as the second bishop of the Diocese of Iowa from 1876 to 1898.

The Episcopal Diocese of Iowa is the diocese of the Episcopal Church in the United States of America which covers all of Iowa. It is in Province VI. Its offices are in Des Moines, and it has two cathedrals: the Cathedral Church of St. Paul in Des Moines and Trinity Cathedral in Davenport.