| Honorific Prefix: | Major General |
| William Hayden | |
| Birth Place: | Windsor, CT |
| Death Place: | Windsor, CT |
| Allegiance: |  United States |
| Rank: | Major General |
| Commands: | Connecticut State Militia |
William Hayden, was the Adjutant General of the State of Connecticut from 1835 to 1836. The Hayden family was a prominent family of Windsor, Connecticut and among the first settlers to the region. The family traces its roots back to England and the services of King Henry VIII.