Regula

Regula may refer to:


 * Regula (name)
 * Regula (architecture), a feature of the Doric order in classical architecture
 * Regula (saint), a Coptic Orthodox and Roman Catholic saint
 * Regula (ship, 1993), a passenger ship operating on Lake Zurich in Switzerland
 * MS Regula, a car ferry operating in Estonia
 * Regula Range, a mountain range of Queen Maud Land, Antarctica
 * Regula Ltd., former Deutsche Bank subsidiary