| Michael F. Flaherty Sr. | |
| Birth Date: | 6 September 1936 |
| Birth Place: | Boston, Massachusetts |
| Office1: | Associate justice of the |
| Term Start1: | July 2001 |
| Term End1: | 2006 |
| State House2: | Massachusetts |
| Term Start2: | January 3, 1967 |
| Term End2: | January 3, 1991 |
| Successor2: | Paul J. Gannon |
| Party: | Democratic |
| Occupation: | Attorney at law |
| Nationality: | American |
| Residence: | South Boston, Boston, Massachusetts |
Michael F. Flaherty Sr. (born September 6, 1936) is a former member of the Massachusetts House of Representatives and former associate justice of the Boston Municipal Court. A South Boston Democrat, he represented the 4th Suffolk district from 1967 to 1991. He was appointed to the Boston Municipal Court by Governor Jane M. Swift in July 2001, and retired in 2006. He is a former attorney who graduated from Boston College and the New England School of Law. He is the father of Michael F. Flaherty, a former Boston City Council president.