Polygamy (called plural marriage by Latter-day Saints in the 19th century or the Principle by modern fundamentalist practitioners of polygamy) was practiced by leaders of the Church of Jesus Christ of Latter-day Saints (LDS Church) for more than half of the 19th century, and practiced publicly from 1852 to 1890 by between 20 and 30 percent of Latter-day Saint families.

The legal status of polygamy varies widely around the world.

Polygamy is "the practice or custom of having more than one wife or husband at the same time."

Polygamy is the practice of having more than one spouse at the same time.

Joseph Smith, the founder of the Latter Day Saint movement, privately taught and practiced polygamy.

an American docudrama television series that premiered on December 30, 2014, on LMN.