John Piper

• John Piper (artist), English painter, printmaker and designer of stained-glass windows
• John Piper (broadcaster), BBC radio host
• John Piper (British Army officer), lieutenant-governor of Norfolk Island
• John Piper (theologian), Calvinist Baptist pastor and author
• John Piper, a recurring fictional character in crime novels by Harry Carmichael, a pen name of British writer Leo Ognall