James Horace Harding (July 13, 1863 – January 4, 1929)[1] was an American banker, financier and art collector.

Upon Barney's retirement in 1907, Harding ran the business under the same name, as senior partner, with Henry E. Butler, Jay Cooke III (his wife's cousin who was the former Republican National Committeeman),[6] and Charles S.

[9] They were the parents of four children:[10] Harding died of influenza on January 4, 1929, at 955 Fifth Avenue, his townhouse in Manhattan (later replaced by a Rosario Candela designed apartment building).

[30] In 1927, he commissioned Oswald Birley to make a portrait of President Plutarco Elías Calles of Mexico, which he presented to the Mexican government.

[1] Harding supported the development of Long Island's roadways and was a proponent of Robert Moses' parkway plan.

He personally commissioned engineering studies to promote the construction of a highway from Queens Boulevard to Nassau County, in order to provide better access to Oakland Country Club, where he was a member and avid golfer.

In 1939, the New York City Council proposed renaming Horace Harding Boulevard to Worlds Fair Boulevard due to the New York World's Fair, but Mayor Fiorello La Guardia refused to remove the name of his friend.

[33] Today, it is the section between Queens Boulevard and the Queens-Nassau county line of the Long Island Expressway and is known as New York State Route 25D.