|Centuries:||19th century - 20th century - 21st century|
|Decades:||1870s 1880s 1890s - 1900s - 1910s 1920s 1930s|
|Years:||1900 1901 1902 1903 1904 1905 1906 1907 1908 1909|
- April 5 - President Joseph F. Smith issues the second manifesto, upholding the provisions of the 1890 Manifesto, and invoking excommunication against anyone contracting new plural marriages.
- June 20 - Abraham O. Woodruff dies in Salt Lake City.