Great Schism

Great Schism may refer to:

• East–West Schism, between the Eastern Orthodox Church and the Catholic Church, beginning in 1054
• Western Schism, a split within the Roman Catholic Church that lasted from 1378 to 1417

See also

• Schism, a division between people, usually belonging to an organization, movement, or religious denomination
• Shia–Sunni relations, their division traces back to a Sunni–Shia schism