| William Jenkins | |
| Office: | Lord Mayor of Belfast |
| Term Start: | 1963 |
| Term End: | 1966 |
| Predecessor: | Martin Kelso Wallace |
| Successor: | William Duncan Geddis |
| Office1: | High Sheriff of Belfast |
| Term Start1: | 1961 |
| Term End1: | 1962 |
| Predecessor1: | William Duncan Geddis |
| Successor1: | William McCracken |
| Birth Date: | 25 July 1904 |
William Jenkins (born 25 July 1904) was a unionist politician in Northern Ireland.
Jenkins studied at the Belfast College of Technology[1] then worked in Bombay from 1931 to 1956 as the director of a tea company. He then returned to Northern Ireland, where he held numerous directorships, but also found time to sit on the Belfast Corporation as an Ulster Unionist Party member. He served as Lord Mayor of Belfast from 1963 to 1966.[2]