| W. Sheffield Cowles | |
| Birth Name: | William Sheffield Cowles |
| Birth Date: | 6 October 1898 |
| Birth Place: | New York City, U.S. |
| Death Place: | Farmington, Connecticut, U.S. |
| Office1: | Member of the Connecticut House of Representatives |
| Term Start1: | 1948 |
| Term End1: | 1956 |
| Office2: | Speaker of the Connecticut House of Representatives |
| Term2: | 1955 |
| Preceded2: | Arthur E. B. Tanner |
| Succeeded2: | Nelson C. L. Brown II |
| Party: | Republican |
| Alma Mater: | Yale University |
| Parents: | William S. Cowles (father) Bamie Roosevelt (mother) |
| Relatives: | Theodore Roosevelt (uncle) Elliott Roosevelt (uncle) Corinne Roosevelt Robinson (aunt) Robert Roosevelt (granduncle) Theodore Roosevelt Jr. (first cousin) James Roosevelt (first cousin once removed) Franklin D. Roosevelt Jr. (first cousin once removed) |
William Sheffield Cowles (October 6, 1898 – May 2, 1986) was an American politician. He served as a Republican member of the Connecticut House of Representatives.
Cowles was born in New York City and was a nephew of President Theodore Roosevelt. He attended Yale University. He saw service in both World War I and World War II, the first in the Marines the second in the Navy.
Cowles served in the Connecticut House of Representatives from 1948[1] to 1956.
Cowles died May 2, 1986 at his family's home in Farmington, Connecticut,[2] [3] at the age of 87.