John Acton

• John Acton (MP) for Droitwich (UK Parliament constituency) in 1597
• Sir John Acton, 6th Baronet, prime minister of Naples
• John Dalberg-Acton, 1st Baron Acton, English historian
• John [Lyon-Dalberg-Acton, 3rd Baron Acton], British peer
• John Lyon-Dalberg-Acton, [5th Baron Acton], English writer and farmer
• John Acton (canon lawyer), English canon lawyer, known for his commentary on the writer on the ecclesiastical Constitutions of two papal legates of the thirteenth century
• John C. Acton, United States Coast Guard rear admiral