| Billy Andrews | |
| State House: | Mississippi |
| District: | 87th |
| Term Start: | January 7, 2020 |
| Term End: | March 31, 2020 |
| Predecessor: | Chris Johnson |
| Successor: | Joseph Tubb |
| State House2: | Mississippi |
| District2: | 102nd |
| Term Start2: | 1977 |
| Term End2: | 1984 |
| Predecessor2: | Mack Graham |
| Successor2: | J. B. Van Slyke Jr. |
| Birth Name: | William Ernest Andrews III |
| Birth Date: | 10 July 1952 |
| Birth Place: | Hattiesburg, Mississippi, U.S. |
| Party: | Republican Democratic (1976–1984) |
| Spouse: | Martha Hensleigh LaNell Campbell |
| Education: | University of Southern Mississippi (BA) Mississippi College (JD) |
| Residence: | Purvis, Mississippi |
| Signature: | William Andrews III signature.png |
William Ernest Andrews III (born July 10, 1952) is an American jurist and politician. First serving in the Mississippi House of Representatives as a Democrat from 1977 to 1984, he sought election again as a Republican in 2019. He resigned effective March 31, 2020.[1]