| John A. O'Neill | |
| Birth Date: | c. 1837 |
| Birth Place: | England |
| Death Date: | June 17, 1892 |
| Death Place: | Washington, D.C.[1] |
| Residence: | Hoboken, New Jersey |
| Office: | Mayor of Hoboken |
| Order: | 15th |
| Term Start: | April 1881 |
| Term End: | April 1882 |
| Predecessor: | E.V.S. Besson |
| Successor: | E.V.S. Besson |
| Party: | Democratic[2] |
John A. O'Neill (c. 1837 - June 17, 1892) was an American steel engraver and Democratic Party politician. He served as the 15th Mayor of Hoboken, New Jersey.
He served as a member of the New Jersey General Assembly in 1872; served three terms on the Hudson County Board of Chosen Freeholders in 1869, 1870, and 1873; and one term as the fifteenth mayor of Hoboken, New Jersey, from 1880 to 1881.[3] He was appointed by President Grover Cleveland as the superintendent of the Engraving Division of the Bureau of Engraving and Printing in 1885 and served there until his death in 1892.[4]