Encyclopædia Britannica, Ninth Edition/Gregory

In the 9th edition of the Encyclopædia Britannica, Gregory may refer to:


 * , a 6th-century pope and doctor of the apocryphally credited with the creation of ,
 * , an 8th-century pope,
 * , an 8th-century pope,
 * , a 9th-century pope,
 * , a 10th-century pope,
 * , born Johannes Gratianus, an 11th-century pope,
 * , born Hildebrand, an 11th-century pope,
 * , born Albert de Mora, a 12th-century pope,
 * , a 13th-century pope,
 * , a 13th-century pope,
 * , born Pierre Roger de Beaufort, a 14th-century pope in Avignon,
 * , born Angelo Corario, a 15th-century pope and bishop of Porto,
 * , born Ugo Buoncompagno, the 16th-century pope responsible for the ,
 * , born Niccolo Sfondrato, a 16th-century pope,
 * , born Alessandro Ludovisio, a 17th-century pope,
 * , born Bartolommeo Alberto Cappellari, a 19th-century pope,
 * , the 3rd- and 4th-century founder of the ,
 * , a 4th-century bishop, one of the four fathers of the ,
 * , a 4th-century bishop,
 * , a 3rd-century bishop,
 * , a 6th-century bishop and historian,
 * , a 17th-century Scottish churchman,
 * , a 17th-century Scottish physician,
 * , a 17th-century Scottish mathematician and physicist, inventor of the ,
 * , a 17th-century Scottish mathematician and astronomer,
 * , an 18th-century Scottish physician,
 * , an 18th- and 19th-century Scottish physician,
 * , a 19th-century Scottish chemist,
 * , a 19th-century Scottish chemist and mathematician, or
 * , an 18th- and 19th-century English mathematician.