Tenafly () is a borough in Bergen County, New Jersey, United States. As of the 2000 Census, the borough population was 13,806. Tenafly is an affluent New York City suburb.

The first to settle in Tenafly were the Dutch in the late 1600s. The name "Tenafly" is derived from the Dutch words "Tiene Vly" or "Ten Swamps" which was given by Dutch settlers in 1688.O'Connor, Ian. If You're Thinking of Living in: Tenafly, The New York Times, April 24, 1988. Accessed September 7, 2006.

Tenafly was incorporated as a borough on January 24, 1894, under an Act of the New Jersey Legislature from portions of the now-defunct Palisades Township, based on the results of a referendum held the previous day, at the height of the Boroughitis phenomenon sweeping through Bergen County at the time."The Story of New Jersey's Civil Boundaries: 1606-1968", John P. Snyder, Bureau of Geology and Topography; Trenton, New Jersey; 1969. p. 87.About Tenafly, accessed September 7, 2006.