| Ambassador From: | United States |
| Country: | Nigeria |
| Term Start1: | December 3, 1971 |
| Term End1: | February 23, 1975 |
| Predecessor1: | William C. Trueheart |
| Successor1: | Donald B. Easum |
| President1: | Richard Nixon Gerald Ford |
| Birth Name: | John Edward Reinhardt |
| Birth Date: | 8 March 1920 |
| Birth Place: | Knoxville, Tennessee |
| Death Place: | Silver Spring, Maryland |
| Alma Mater: | Knoxville College University of Chicago University of Wisconsin–Madison |
| Office2: | 14th Assistant Secretary of State for Public Affairs |
| Termstart2: | April 22, 1975 |
| Termend2: | March 22, 1977 |
| Preceded2: | Carol Laise |
| Succeeded2: | Hodding Carter III |
John Edward Reinhardt (March 8, 1920 – February 18, 2016) was an American ambassador and diplomat.
Reinhardt was born in Glade Spring, Virginia and raised in Knoxville, Tennessee. After graduating from Knoxville College in 1939, he attended the University of Chicago, initially pursuing a graduate degree in English, but did not finish on account to serving in World War II. His doctorate in English was completed in 1950 at the University of Wisconsin–Madison.[1] He was the American ambassador to Nigeria from 1971 to 1975.[2] From 1975 to 1977, he was Assistant Secretary of State for Public Affairs. He became the director of the United States Information Agency from 1977 to 1980. He was a member of the Peabody Awards Board of Jurors from 1980 to 1987[3] Reinhardt later was a professor of political science at the University of Vermont from 1987 to 1991.
On June 16, 2004 he joined a group of twenty seven called Diplomats and Military Commanders for Change opposing the Iraq War. He died on February 18, 2016.[4]