Hiram Barney (May 30, 1811 – May 18, 1895) was an American lawyer, abolitionist, and politician who served as Collector of the Port of New York from 1861 until his resignation in 1864 during the presidency of Abraham Lincoln.

A trusted advisor to Lincoln, the President summoned Barney for his opinion on the Emancipation Proclamation whilst it was being drafted in 1862.

In 1830, he served as chairman of the executive committee of the Young Men's Anti-Slavery Society in New York City.

The firm was later continued under the name of Barney, Humphrey, and Butler and operates today as Kelley Drye & Warren LLP.

One of their sons, Lewis Tappan Barney, became a highly decorated officer during the American Civil War.