Thomas Eddy (September 5, 1758 Philadelphia, Pennsylvania - September 16, 1827 New York City) was an American merchant, banker, philanthropist and politician from New York.
He was the son of Irish Quaker immigrants who had come to America about five years prior to his birth. His father was engaged in the shipping business until 1766 when he went into hardware, but died later the same year. A few years later, the family moved to Bucks County, Pennsylvania. When thirteen years old, Eddy was apprenticed to learn the tanning business in Burlington, New Jersey but remained there only two years.
In September 1779, Eddy removed to New York City, and became a merchant, dealing mostly in imported goods which were shipped from England and Ireland by his brother Charles. In 1781, he earned a large amount by the remittance of money from the British headquarters in New York t the troops under General Cornwallis who were held prisoners at Lancaster, Pennsylvania, after the fall of Yorktown.
In 1782, Eddy married Hannah Hartshorne at New York City. Afterward, he returned to Philadelphia and formed a partnership with his brother George. In the wake of the commercial crisis in the middle of the 1780s, he and his brothers George and Charles went bankrupt. He removed to New York City again, and became the first insurance broker there, and later an underwriter, speculating in public funds. He became thus a director of the Mutual Insurance Company, and the Western Inland Lock Navigation Company. In 1803, he was one of the founders of the New York Savings Bank.