| Ken Donnelly | |
| Birth Date: | 15 July 1950 |
| Birth Place: | Arlington, Massachusetts |
| Death Place: | Arlington, Massachusetts |
| State Senate: | Massachusetts |
| District: | Fourth Middlesex |
| Term Start: | 2009 |
| Term End: | 2017 |
| Successor: | Cindy Friedman |
Kenneth J. Donnelly (July 15, 1950 - April 2, 2017) was a Massachusetts state senator for the Fourth Middlesex district, which included his hometown of Arlington and several other cities. He was a Democrat who served from 2009 to 2017.
Donnelly graduated from the University of Massachusetts Amherst with a BA in Labor Studies.[1]
He was a retired lieutenant with the Lexington Fire Department in Lexington, Massachusetts.[2]
On June 17, 2014, Donnelly endorsed fellow Democrat Don Berwick in the Massachusetts gubernatorial election, 2014.[3]
Donnelly died on April 2, 2017, in Arlington, Massachusetts from complications of a brain tumor, aged 66.[4] [5]