Millner is a surname. Notable people with the surname include:

• David Millner (born 1938), English cricketer
• Denene Millner (born 1968), American author and journalist
• F. Ann Millner, American educator
• Guy Millner (born 1936), American businessman
• James Millner (doctor) (1830–1875), early Australian doctor and pioneer
• James Millner (pharmacist) AM (1919–2007), pharmacist and Australian corporate executive
• John J. Millner (born 1951), American politician
• Joshua Millner (1849–1931), British sport shooter
• Robert Millner (born 1950), Australian corporate executive
• Tivadar Millner (1899–1988), Hungarian inventor
• Wayne Millner (1913–1976), American football player

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