President Franklin Delano Roosevelt, 1945
| Vice President | Harry S Truman |
| Inauguration Date | Saturday, January 20, 1945 |
| Location | South Portico, White House |
| Oath Administered By: | Harlan F. Stone, Chief Justice |
| Bible Used: | Same family Bible used for his 1933, 1937, and 1941 Inaugurations, open to I Corinthians 13 |
| Length of Inaugural Address: | 557 words |
| Attire (what the president wore): | Dark business suit |
| Weather: | Light snow ended around 9 am that morning. Cloudy skies. Estimated noon temperature of 35°F. |
| Precedents, "firsts" or other interesting information: | At the height of WWII, Franklin D. Roosevelt's fourth Inauguration was simple and austere with no fanfare or formal celebration following the event.There was no parade because of gas rationing and a lumber shortage. |

