John Hathorn (January 9, 1749 – February 19, 1825) was an American politician and Continental Army officer from New York.

He moved to Warwick in the Province of New York, then a part of the precinct of Goshen and married Elizabeth Welling.

[1] He was a captain in the local colonial militia, and became a colonel of the Fourth Orange County Regiment February 7, 1776, and served throughout the Revolutionary War.

He served on the committee appointed to determine an effective location for the Hudson River Chain which prevented the British from advancing upriver, and he wrote the report thereafter.

In World War II, the United States liberty ship SS John Hathorn was named in his honor.