Horton is a masculine given name. People or fictional characters named Horton include:
Horton D. Haight (1832–1900), Mormon pioneer
Horton Foote (1916–2009), American playwright and screenwriter
Horton H. Hobbs, Jr. (1914–1994), American taxonomist and carcinologist
Horton Smith (1908–1963), American golfer and first winner of the Masters Tournament
Horton Williams (born 1933), retired judge of the Supreme Court of South Australia
Horton the Elephant, fictional Dr. Seuss character