| John M. Webster | |
| Office: | 18th Mayor of Somerville, Massachusetts |
| Term Start: | January 1922 |
| Term End: | January 4, 1926 |
| Majority: | 4,626 (1921) |
| Office2: | President of the Somerville, Massachusetts Board of Aldermen |
| Office3: | Member of the Somerville, Massachusetts Board of Aldermen Ward 4 |
| Birth Date: | 20 July 1877 |
| Birth Place: | New Brunswick, Canada |
| Death Place: | Somerville, Massachusetts, U.S. |
| Nationality: | American |
John M. Webster (July 20, 1877 – June 7, 1963) was an American politician who served as the eighteenth Mayor, of Somerville, Massachusetts.[1]
In December 1921 Webster was elected Mayor of Somerville, he was reelected over John J. Murphy in December 1923.