| Office: | Mayor of Jackson, Mississippi |
| Termstart: | 1901 |
| Termend: | 1905 |
| Birth Date: | 19 July 1869 |
| Birth Place: | Carroll County, Mississippi |
| State House1: | Mississippi |
| Termstart1: | January 1920 |
| Termend1: | 1920 |
| District1: | Hinds County |
| Successor: | Oliver Clifton |
| Successor1: | Robert Stafford Curry |
| Predecessor: | John W. Todd |
| Predecessor1: | E. H. Green J. S. Rhodes |
| Party: | Democrat |
William Hemingway (July 19, 1869 - November 5, 1937) was the mayor of Jackson, Mississippi, from 1901 to 1905, and a member of the Mississippi House of Representatives in 1920.[1] He was a Democrat.
Hemingway was born on July 19, 1869, in Teoc, Carroll County, Mississippi, to Colonel William Linn Hemingway and Mary Elizabeth McCain Hemingway.[2] He graduated from the University of Mississippi in 1889, and was admitted to the bar in 1897. He was the Jackson city attorney from 1909 to 1921. He was elected to the Mississippi House of Representatives to represent Hinds County in 1920, but he resigned soon after election to be the state's Assistant Attorney General. He died on November 5, 1937.
Hemingway married Grace Hyer in 1901. Her father, William Fisk Hyer, was a member of the Mississippi Legislature in 1871. William and Grace had several children, but all of them died in infancy.