| Raymond Didier | |
| Birth Date: | 17 January 1920 |
| Birth Place: | Marksville, Louisiana, U.S. |
| Death Place: | Jefferson, Louisiana, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1938–1939 |
| Player Team2: | Southwestern Louisiana |
| Player Years3: | 1946 |
| Player Team3: | Southwestern Louisiana |
| Player Sport4: | Baseball |
| Player Years5: | 1939 |
| Player Team5: | Southwestern Louisiana |
| Player Years6: | 1940 |
| Player Team6: | Port Arthur Tarpons |
| Player Years7: | 1946–1947 |
| Player Team7: | Southwestern Louisiana |
| Coach Sport1: | Football |
| Coach Years2: | 1948–1950 |
| Coach Team2: | Southwestern Louisiana (ends) |
| Coach Years3: | 1951–1956 |
| Coach Team3: | Southwestern Louisiana |
| Coach Years4: | 1957–1962 |
| Coach Team4: | LSU (asst.) |
| Coach Sport5: | Baseball |
| Coach Years6: | 1948–1956 |
| Coach Team6: | Southwestern Louisiana |
| Coach Years7: | 1957–1963 |
| Coach Team7: | LSU |
| Coach Years8: | 1964–1973 |
| Coach Team8: | Nicholls State |
| Admin Years1: | 1963–1978 |
| Admin Team1: | Nicholls State |
| Overall Record: | 29–27–2 (football) 458–311–4 (baseball) |
| Championships: | Football SLI: 1 Gulf States (1952) Baseball SLI: 5 Gulf States, LSU: 1 SEC (1961), NSU: 1 Gulf States |
Raymond Ernest Didier (January 17, 1920 – March 9, 1978) was an American football coach, baseball coach and college athletics administrator. He served as the head football coach at the Southwestern Louisiana Institute—now known as University of Louisiana at Lafayette from 1951 to 1956, tallying a mark of 29–27–2.[1] Didier was also the head baseball coach at Southwestern Louisiana from 1948 to 1956, Louisiana State University from 1957 to 1963 and Nicholls State University from 1964 to 1973, amassing a career college baseball record of 458–311–4.[1] Didier served as the athletic director at Nicholls State from 1963 to 1978.[1]
Ray E. Didier Field on the campus of Nicholls State University is named after him.[2] Didier is a member of the Louisiana Sports Hall of Fame.[3]