John M. Barretto Jr.
John M. Barretto Jr.
| Police Chief | |
| In Office | 1976 - 1994 |
| Preceded by | Joseph L. Ryan |
| Succeeded by | Paul W. Matthews |
Billerica police officer; Acting Chief of Police from 1976 after the death of Chief Joseph L. Ryan, appointed Chief December 5, 1977, and served until November 1994.