Horace or Horrie Miller may refer to:

• Horrie Miller (aviator) (1893–1980), Australian aviation pioneer
• Horrie Miller (rugby league) (1882–1967), Australian rugby league footballer and administrator
• Horace Miller (cricketer) (born 1989), Jamaican cricketer
• Horace Miller, fictional character in the musical, Miss Liberty
• Horace Miller, American football player in the 2014 Carolina Panthers season
• Horace A. Miller, part owner of the original Pacific Gas and Electric Company
• Horace H. Miller, United States Ambassador to Bolivia in the 1850s