John Louis
John Louis may refer to:
- John Louis, Count of Nassau-Saarbrücken, posthumous son of Count John II
- John Louis of Elderen, bishop of Liège
- John Louis, Count of Nassau-Ottweiler
- John Louis I, Prince of Anhalt-Dornburg, German prince
- John Louis II, Prince of Anhalt-Zerbst, German prince
- Sir John Louis, 2nd Baronet, admiral in the Royal Navy
- John J. Louis Jr., American businessman and ambassador to the United Kingdom
- John Louis , British motorcycle racer
- John Jeffry Louis III, British businessman