A caliph is the head of state in a caliphate, and the title for the leader of the Islamic Ummah, an Islamic community ruled by the Shari'ah Khalifa is the Arabic word for caliph.
Caliph may also refer to:
USS Caliph (SP-272), a United States Navy patrol vessel Enispe (butterfly), a genus of butterflies also known as caliphs Caliph, South Australia, a locality in the Murray Mallee region of South Australia, Australia
See also List of caliphs Caliphate (disambiguation) Khalifa (disambiguation)