| Birth Date: | 22 March 1872 |
| Birth Place: | Grenada County, MS |
| State House8: | Mississippi |
| Termstart8: | January 1916 |
| Termend8: | January 1924 |
| District8: | Grenada County |
| Party: | Democrat |
| Children: | William Forrest Winter |
| State Senate: | Mississippi |
| District: | 28th |
| Termstart: | January 1940 |
| Termend: | January 1944 |
| Termstart1: | January 1932 |
| Termend1: | January 1936 |
| Termstart2: | January 1924 |
| Termend2: | January 1928 |
| State House3: | Mississippi |
| District3: | Montgomery-Grenada counties |
| Termstart3: | January 1944 |
| Termend3: | January 1948 |
William Aylmer Winter (March 22, 1872 - March 12, 1952) was a farmer and a Democratic Mississippi state legislator from Grenada County in the early-to-mid 20th century. He was also the father of the Mississippi governor William Forrest Winter.
William Aylmer Winter was born on March 22, 1872, in Grenada County, Mississippi.[1] [2] [3] He was the son of William Brown Winter and Amelia (Fisher) Winter. He went to the private and public schools of Grenada and Tallahatchie counties. He graduated from the Iuka Normal Institute with an A. B. in 1891. He was a farmer.
Winter was elected to represent Grenada County in the Mississippi House of Representatives as a Democrat for the first time in 1915 for the 1916-1920 term.[4] He was re-elected in 1919 and served in the 1920-1924 term. He then was in the Mississippi Senate, representing the 28th district, from 1924 to 1928, from 1932 to 1936, and from 1940 to 1944.[5] Finally, he was a member of the Mississippi House of Representatives, representing Montgomery and Grenada counties as a floater representative.
Winter died on March 12, 1952.[6]
Winter was a Presbyterian. He married schoolteacher Inez Parker on March 2, 1921, in Memphis, Tennessee. Their son and only child, William Forrest Winter, became the governor of Mississippi from 1980 to 1984.[7]