John Pennycuick

• Brigadier John Pennycuick (brigadier), British Army officer who died at the Battle of Chillianwalla in the Second Anglo-Sikh War
• Colonel John Pennycuick (engineer), British Army engineer and civil servant, son of Brigadier John Pennycuick
• Sir John Pennycuick (judge), English barrister and judge, tennis player, son of Colonel John Pennycuick