| James L. O'Connor | |
| Order: | 15th |
| Office: | Attorney General of Wisconsin |
| Governor: | George Wilbur Peck |
| Term Start: | January 5, 1891 |
| Term End: | January 7, 1895 |
| Predecessor: | Charles E. Estabrook |
| Successor: | William H. Mylrea |
| Office1: | District Attorney of Dane County, Wisconsin |
| Term Start1: | January 5, 1885 |
| Term End1: | January 7, 1889 |
| Predecessor1: | Robert M. La Follette |
| Successor1: | John L. Erdall |
| Party: | Democratic |
| Birth Date: | 3 June 1859 |
| Birth Place: | Hartford, Wisconsin, U.S. |
| Death Place: | Milwaukee, Wisconsin, U.S. |
| Restingplace: | Holy Cross Cemetery, Milwaukee |
| Education: | University of Wisconsin Law School |
| Profession: | lawyer |
James L. O'Connor (June 3, 1859August 19, 1931) was an American lawyer and Democratic politician. He was the 15th Attorney General of Wisconsin (1891 - 1895).
Born in Hartford, Wisconsin, O'Connor graduated from University of Wisconsin Law School. He served as city attorney for Madison, Wisconsin, and then district attorney of Dane County, Wisconsin. After serving as Wisconsin Attorney General, O'Connor moved to Milwaukee, Wisconsin, where he continued to practice law.[1]
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, November 4, 1890| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, November 8, 1892| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, November 6, 1894