| Billy Williams | |
| Birth Date: | 8 August 1892 |
| Birth Place: | Sullivan County, Indiana, U.S. |
| Death Place: | Muncie, Indiana, U.S. |
| Alma Mater: | Indiana State |
| Coach Sport1: | Football |
| Coach Years2: | 1924–1925 |
| Coach Team2: | Muncie State |
| Coach Sport3: | Basketball |
| Coach Years4: | 1922–1925 |
| Coach Team4: | Muncie State |
| Coach Sport5: | Baseball |
| Coach Years6: | 1922–1926 |
| Coach Team6: | Muncie State |
| Coach Years7: | 1928–1958 |
| Coach Team7: | Ball Teachers / Ball State |
| Admin Years1: | 1921–1958 |
| Admin Team1: | Muncie State / Ball Teachers / Ball State |
| Overall Record: | 3–8 (football) 36–34–1 (basketball) 207–228–4 (baseball) |
Paul Beauchamp "Billy" Williams (August 8, 1892 – July 14, 1973) was an American football, basketball, and baseball coach and college athletics administrator. He served as the head football coach at Muncie State Normal School—now known as Ball State University from 1924 to 1925, compiling a record of 3–8. He was the Ball Teachers College's head basketball from 1922 to 1925, tallying a mark of 36–34–1, and the school's head baseball coach from 1922 to 1926 and from 1928 to 1958, amassing a record of 207–228–4. In addition, Williams served as the school's athletic director from 1921 until 1958. He died on July 14, 1973, at a nursing home in Muncie, Indiana.[1]