Gregorian might refer to:Named for Pope Gregory I:Gregorian chant Brotherhood of Saint GregoryGregorian reform (Pope Gregory VII)Named for Pope Gregory XIIIGregorian calendarGregorian University, RomeThe Armenian Apostolic Church, sometimes called the Gregorian Church (Saint Gregory the Illuminator)Gregorian telescope (James Gregory)Gregorian Bivolaru, founder of the Movement for Spiritual Integration into the Absolute (MISA)Gregorian (band) Gregorian Satellite Dish Antennas… (More on Gregorian)