Henry Farnam Dimock (March 28, 1842 – April 10, 1911) was an American lawyer in New York City who was closely associated with the Whitney family business interests.

In 1875, Governor Samuel J. Tilden appointed Dimock to a committee to devise plans for the improvement of city government in the state.

On July 24, 1892, while on her customary voyage from New York to Boston, in the Vinyard Sound the H.F. Dimock collided with William K. Vanderbilt's yacht, the Alva, sinking her.

Dimock was a member of the Society of Mayflower Descendants and of the University, Manhattan, Metropolitan, Down Town, Barnard, Lawyers, and Democratic clubs of New York City.

Dimock and Whitney resided in New York City at 25 60th Street, corner of Madison Avenue, and also had a summer home at Bar Harbor, Maine.

[9] Some five years after his death, the site of his home at Madison Avenue and 60th Street was leased to the Guaranty Trust Company for the construction of a new office building.