John Letts

• John Letts , English publisher, who founded the British Empire and Commonwealth Museum
• John Letts, English stationary producer, who founded Letts of London
• John Spencer Letts, U.S. federal judge
• John Letts , former Australian jockey
• John Letts , former professional tennis player from the United States
• John Letts , World War I flying ace in No. 48 Squadron RAF