1917 New York City mayoral election

1917 New York City mayoral election
	Results by Borough Hylan—50–60% Hylan—<50%
Mayor before election; John P. Mitchel; Independent	Elected Mayor ; John F. Hylan; Democratic

The 1917 New York City mayoral election replaced sitting mayor John P. Mitchel, a reform Democrat running on the Fusion Party ticket, with John F. Hylan, the regular Democrat supported by Tammany Hall and William Randolph Hearst.

The election was notable not only for the first partisan primary elections for City offices, but for the contentious debate over supporting U.S. entry into World War One, vigorously supported by Mitchel and opposed by the Socialist candidate, Morris Hillquit. Mitchel and Hillquit each won about a fifth of the total vote, while Hylan won office with less than half the vote.