John Byng may refer to:
- John Byng (1704–1757), British Admiral in the Seven Years' War, executed for "fail[ing] to do his utmost"
- John Byng, 5th Viscount Torrington (1743–1813), British peer and diarist
- John Byng, 1st Earl of Strafford (1772–1860), British peer, politician and soldier during the Napoleonic Wars