John Joseph Boylan | |
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| Member of the U.S. House of Representatives from New York's 15th district | |
| In office March 4, 1923 – October 5, 1938 | |
| Preceded by | Thomas J. Ryan |
| Succeeded by | Michael J. Kennedy |
| Member of the New York Senate from the 13th district | |
| In office January 1, 1919 – December 31, 1922 | |
| Preceded by | Jimmy Walker |
| Succeeded by | Ellwood M. Rabenold |
| Member of the New York Senate from the 15th district | |
| In office January 1, 1913 – December 31, 1918 | |
| Preceded by | Thomas J. McManus |
| Succeeded by | Abraham Kaplan |
| Member of the New York State Assembly from the New York County, 11th district | |
| In office January 1, 1910 – December 31, 1912 | |
| Preceded by | Owen W. Bohan |
| Succeeded by | John Kerrigan |
| Personal details | |
| Born | September 20, 1878 New York City |
| Died | October 5, 1938 (aged 60) New York City |
| Citizenship |  United States |
| Political party | Democratic Party |
| Alma mater | Manhattan College |
| Profession | Realtor, politician |
John Joseph Boylan (September 20, 1878 – October 5, 1938) was an American politician who served eight terms as a Democratic member of the United States House of Representatives from New York from 1923 until his death in 1938.