John Duncan

• Art Duncan
• Big John Duncan
• Jack Duncan (disambiguation)
• Jimmy Duncan (politician)
• John Alton Duncan
• John Augustus Duncan
• John Dongan
• John Duncan (Australian politician)
• John Duncan (British Army officer)
• John Duncan (British Army officer, born 1870)
• John Duncan (Canadian politician)
• John Duncan (New Zealand politician)
• John Duncan (US Administration)
• John Duncan (artist)
• John Duncan (botanist)
• John Duncan (diplomat)
• John Duncan (footballer)
• John Duncan (harpist)
• John Duncan (neuroscientist)
• John Duncan (painter)
• John Duncan (priest)
• John Duncan (surgeon)
• John Duncan (theologian)
• John Duncan (traveller in Africa)
• John Duncan (weaver)
• John Duncan (writer)
• John Duncan Sr.
• John Edward Duncan
• John H. Duncan
• John Holt Duncan
• John Riley Duncan
• John S. Duncan
• John S. R. Duncan
• John William Duncan
• Johnny Duncan (actor)
• Johnny Duncan (bluegrass musician)
• Johnny Duncan (country singer)
• Johnny Duncan (footballer)
• Jon Duncan
• Jonathan Duncan (disambiguation)
• Ross Duncan