| Ray Louthen | |
| Birth Date: | 4 October 1925 |
| Birth Place: | Bluefield, Virginia, U.S. |
| Death Place: | Muncie, Indiana, U.S. |
| Player Sport1: | Football |
| Player Years2: | 1944 |
| Player Team2: | Western Michigan |
| Player Sport3: | Baseball |
| Player Years4: | 1944 |
| Player Team4: | Western Michigan |
| Player Years5: | 1945 |
| Player Team5: | Michigan |
| Player Years6: | 1946 |
| Player Team6: | Beaumont Exporters |
| Player Years7: | 1946 |
| Player Team7: | Kansas City Blues |
| Player Years8: | 1947 |
| Player Team8: | Quincy Gems |
| Player Years9: | 1948 |
| Player Team9: | Augusta Tigers |
| Player Years10: | 1948 |
| Player Team10: | Kansas City Blues |
| Player Years11: | 1949 |
| Player Team11: | Sioux City Soos |
| Player Years12: | 1949 |
| Player Team12: | Beaumont Exporters |
| Player Positions: | Pitcher (baseball) |
| Coach Sport1: | Football |
| Coach Years2: | c. 1950 |
| Coach Team2: | Chelsea HS (MI) |
| Coach Years3: | ?–1957 |
| Coach Team3: | Flint Central HS (MI) (line) |
| Coach Years4: | 1958–1960 |
| Coach Team4: | Ball State (assistant) |
| Coach Years5: | 1962–1967 |
| Coach Team5: | Ball State |
| Coach Sport6: | Baseball |
| Coach Years7: | ?–1958 |
| Coach Team7: | Flint Central HS (MI) |
| Coach Years8: | 1959–1970 |
| Coach Team8: | Ball State |
| Admin Years1: | 1970–1981 |
| Admin Team1: | Ball State |
| Overall Record: | 37–13–3 (college football) 158–127–1 (college baseball) 12–3–1 (high school football) |
| Bowl Record: | 0–1–1 |
| Championships: | Football 4 ICC (1964–1967) |
Raymond A. "Red" Louthen (October 4, 1925 – December 3, 2004) was an American football and baseball player, coach, and college athletics administrator. He served as the head football coach at Ball State University from 1962 to 1967, compiling a record of 37–13–3. Louthen was also the head baseball coach at Ball State from 1959 to 1970, tallying a mark of 158–127–1.
Louthen was the head baseball coach at Ball State from 1959 to 1970; he was a 3-time Indiana Collegiate Conference Coach of the Year (1960, 1961, 1962.) He coached six ICC MVPs (Dean Campbell, Mike Readnour, Homer Jackson, Frank Houk, Ed Sherry and Jim Roudebush) and 19 All-ICC players. Two of his players reached the major leagues; Merv Rettenmund and Steve Hargan.