| John J. McDonough | |
| Office: | 41st Mayor of Saint Paul, Minnesota |
| Term Start: | 1940 |
| Term End: | 1948 |
| Predecessor: | William H. Fallon |
| Successor: | Edward K. Delaney |
| State House2: | Minnesota |
| District2: | 38th |
| Term Start2: | January 6, 1925 |
| Term End2: | January 7, 1935 |
| Birth Date: | 25 September 1895 |
| Birth Place: | Saint Paul, Minnesota, U.S. |
| Death Place: | Saint Paul, Minnesota, U.S. |
| Party: | Democratic (DFL) |
| Residence: | Saint Paul, Minnesota, U.S. |
| Education: | Saint Thomas Academy University of Minnesota Saint Paul College of Law (LLB) |
| Profession: | Politician, lawyer |
John J. McDonough (September 25, 1895 – February 27, 1962) was an American lawyer and Democratic politician who served as Mayor of Saint Paul, Minnesota, from 1940 to 1948.
McDonough was born in Saint Paul in 1895. He attended Saint Thomas Academy and the University of Minnesota before earning a law degree at the Saint Paul College of Law in 1918. He worked as a lawyer and served in the Minnesota House of Representatives for five terms from 1925 to 1935. While he was nonpartisan, he was well known for fighting prohibition and held a mixture of conservative legal beliefs but liberal political ones. He was elected mayor of Saint Paul in 1940. While in office in 1946 he suffered a stroke which left him largely paralyzed (though mentally alert) for the remainder of his life. He died in Saint Paul on February 27, 1962.[1] [2]