John Jay Iselin

John Jay Iselin (December 8, 1933 in Greenville, South Carolina – May 6, 2008 New York City), great-great-great-great-grandson of John Jay, was president of the Marconi fellowship foundation at Columbia University. He was also an adjunct faculty member of the Columbia University Graduate School of Journalism.

Iselin was a graduate of St. Mark's School, and Harvard, where he served as Managing Editor of the Crimson. In 1959, he was selected as a Marshall Scholar, and in 2001 became founding Chairman of the New York Marshall Committee.

Until 2000, Iselin served as President of The Cooper Union for the Advancement of Science and Art. Before that he served as president of WNET.

For over 40 years he spent his summers in Vinalhaven, Maine.