| Honorific Prefix: | Coronel |
| Enrique O'Neil | |
| Order: | 68th |
| Office: | Mayor of Ponce, Puerto Rico |
| Term Start: | 1866 |
| Term End: | 1867 |
| Predecessor: | Carlos Cabrera y Martínez |
| Successor: | Demetrio Santaella |
| Profession: | Soldier |
Enrique O'Neil was Mayor of Ponce, Puerto Rico, from 1866 to 1867.
Enrique O'Neil is best known for having adopted a complete plan for urban remodeling for the city of Ponce in 1867.[1] The plan was adopted with the help of Spanish military engineer Félix D'Ors. It was influenced by remodeling plans in Paris, Barcelona, and Madrid. Part of the legacy of that plan are the chamfered street corners evident throughout the city. Jorge Rigau has stated that these features "signaled the city's coming of age as a modern urban entity."[2]