Fundamentalist Church of Jesus Christ of Latter-Day Saints

Fundamentalist Church of Jesus Christ of Latter-Day Saints
Former FLDS temple in the YFZ Ranch in Texas
ClassificationLatter Day Saint movement
OrientationMormon fundamentalist
ScriptureThe standard works (with adjustments)
TheologyContinuing revelation
StructureOne Man Rule
AssociationsUnited Effort Plan
RegionNorth America
OriginEarly 1900s (as Short Creek Community)
Branched fromThe Priesthood Council
SeparationsCentennial Park
Church of Jesus Christ Inc.
Other namesThe Fundamentalists, First Ward, FLDS Church

The Fundamentalist Church of Jesus Christ of Latter-Day Saints (abbreviated to FLDS Church or FLDS) is a Mormon fundamentalist group whose members practice polygamy. It is variously defined as a cult, a sect or a new religious movement. Warren Jeffs has been the church's president since 2002.

The FLDS has a large concentration of members in the twin towns of Colorado City, Arizona and Hilldale, Utah, where the church was formerly headquartered, in addition to various other populations across the Western United States, Mexico and Canada. The FLDS also previously owned a 1,700-acre complex near Eldorado, Texas known as the YFZ Ranch, which was the site of a high-profile law enforcement raid in 2008 that brought the church to mainstream public attention.

Since the mid-2000s, the FLDS has come under increasing scrutiny for allegations of child sexual abuse, child marriage, human trafficking, child labor abuses, welfare fraud and the ostracizing of members, with several prominent members and leaders having been investigated for or convicted of sexual offenses. Warren Jeffs himself was convicted on separate rape charges in Utah and Texas, respectively, and is currently serving a sentence of life plus twenty years in the latter state.