Arthur Duff (1899–1956) was an Irish composer and conductor.

Arthur Duff may also refer to:

• Arthur Duff (cricketer) (born 1883, death unknown), Jamaican cricketer
• Arthur Duff (MP) (1743–1805), Scottish MP for Elginshire
• Arthur Grant Duff (1861–1948), British diplomat
• Arthur Antony Duff (1920–2000), British diplomat and Director General of MI5