|Centuries:||19th century - 20th century - 21st century|
|Decades:||1910s 1920s 1930s - 1940s - 1950s 1960s 1970s|
|Years:||1940 1941 1942 1943 1944 1945 1946 1947 1948 1949|
- January 4 - The Church observed a special fast Sunday in conjunction with a national day of prayer called by President Franklin D. Roosevelt.
- August 17 - The USS Brigham Young, a Liberty class ship, was christened.