| John Fox | |
| Image Name: | JFox.jpg |
| Width: | 200px |
| State1: | New York |
| District1: | 4th |
| Party: | Democrat |
| Term1: | March 4, 1867 – March 3, 1871 |
| Preceded1: | Morgan Jones |
| Succeeded1: | Robert B. Roosevelt |
| State Senate2: | New York |
| District2: | 4th |
| Term Start2: | January 1, 1874 |
| Term End2: | December 31, 1875 |
| Preceded2: | William M. Tweed |
| Succeeded2: | John Morrissey |
| Birth Date: | 30 June 1835 |
| Birth Place: | Fredericton, New Brunswick Colony, British Canada |
| Death Place: | New York City, New York, U.S. |
| Profession: | Politician, Mechanic, Merchant |
John Fox (June 30, 1835January 17, 1914) was an American mechanic, merchant and politician from New York. He served two terms in the United States House of Representatives from 1867 to 1871.
Born to Irish emigrants in Fredericton in the New Brunswick Colony in British Canada, Fox immigrated to the United States with his parents in 1840, settling in New York City, New York. He attended public schools as a child, engaged in mechanical pursuits and was employed as a master block maker in the Brooklyn Navy Yard in 1857. He was a member of the New York City Council, and was a Supervisor of New York County in 1863 and 1864.
Fox was elected as a Democrat to the 40th and 41st United States Congresses, holding office from March 4, 1867, to March 3, 1871. He was a member of the New York State Senate (4th D.) in 1874 and 1875.
He was president of the National Democratic Club from 1894 to 1910 and engaged in business as an iron merchant.
He died in New York City on January 17, 1914 from pneumonia, and was buried at the Calvary Cemetery in Woodside, Queens.