Hambletonian may refer to:
Hambletonian (horse) (1792–1818), an English Thoroughbred racehorse, sometimes known as Hambletonian I Hambletonian 10 (1849–1876), an American foundation sire of the harness racing breed known as the Standardbred. Hambletonian Stakes, a major American harness race The Hambletonian Classic, a New Zealand trotting race
See also Hamiltonian (disambiguation)