Gregorian

• Armenian Apostolic Church
• Arthur Gregorian
• Arthur T. Gregorian
• Brotherhood of Saint Gregory
• Gregorian (band)
• Gregorian (horse)
• Gregorian Antiphonary
• Gregorian Bivolaru
• Gregorian Consortium
• Gregorian Reform
• Gregorian Sacramentary
• Gregorian Tower
• Gregorian calendar
• Gregorian chant
• Gregorian mass
• Gregorian telescope
• Hrach Gregorian
• James Gregory (mathematician)
• Joyce Ballou Gregorian
• Mike Gregorian
• Pontifical Gregorian University
• Pope Gregory I
• Pope Gregory XIII
• Vartan Gregorian