John Watt

• John Watt , Australian politician, member of the New South Wales Legislative Council
• John Watt , Australian physicist
• John Watt , Australian cricketer
• John Alexander Watt, Australian geologist and mineralogist
• John Charles Watt, Australian cricketer and son of the above cricketer
• John Watt , British broadcaster and producer
• John Millar Watt, British painter, illustrator and comics artist
• John Mitchell Watt South African pharmacologist and author