Church of the Firstborn or Church of the First Born may refer to:

• Church of the Firstborn (Morrisite), a Latter Day Saint sect formed in 1861 and extant until 1969

• Church of the Firstborn (LeBaron family)
  • Church of the Firstborn of the Fulness of Times, a Latter Day Saint sect formed in the 1950s by Joel LeBaron
  • Church of the First Born of the Lamb of God, founded in 1972 by Ervil LeBaron

• Church of the First Born and General Assembly of Heaven, a Latter Day Saint sect formed by Terrill Dalton in 2004

• General Assembly and Church of the First Born

This disambiguation page lists articles associated with the title Church of the Firstborn.
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