Henry Clay McDowell (February 9, 1832 – November 18, 1899) was an American businessman and noted Standardbred horse breeder.
During the American Civil War, Henry McDowell served with the Union Army.
In 1883, McDowell purchased Dictator, a top Standardbred sire who was one of the four influential sons of Hambletonian.
In his obituary, the San Francisco Call newspaper wrote that he was "probably the best known citizen of Kentucky in private life."
Daughter Madeline was a noted social reformer whose efforts were focused on child welfare, health issues, and women's rights.