Henry Collins Flagg
| Henry Collins Flagg | |
|---|---|
| Mayor of New Haven, Connecticut | |
| In office 1834–1839 | |
| Preceded by | Noyes Darling | 
| Succeeded by | Samuel Johnson Hitchcock | 
| Personal details | |
| Born | January 5, 1792 Berkeley County, South Carolina, U.S. | 
| Died | March 8, 1863 (aged 71) New Haven, Connecticut, U.S. | 
| Political party | Federalist | 
| Spouse | Martha Whiting  (m. 1811) | 
| Relations | Washington Allston (half-brother) Alice Claypoole Vanderbilt (granddaughter) Ernest Flagg (grandson) | 
| Children | 7, including George, Jared | 
| Alma mater | Yale College | 
| Occupation | Lawyer, editor, politician | 
Henry Collins Flagg Jr. (January 5, 1792 – March 8, 1863) was an American lawyer, newspaper editor, and politician. He was the grandfather of Alice Claypoole Vanderbilt.