Peter I

• King Peter (disambiguation)
• Pedro I (disambiguation)
• Pedro I of Brazil
• Pedro I of Kongo
• Petar I (disambiguation)
• Peter I (archbishop of Lyon)
• Peter I Island
• Peter I of Aragon and Navarre
• Peter I of Armenia
• Peter I of Barcelona
• Peter I of Bulgaria
• Peter I of Constantinople
• Peter I of Cyprus
• Peter I of Montenegro
• Peter I of Portugal
• Peter I of Savoy
• Peter I of Serbia
• Peter I of Valencia
• Peter I of the Miskito nation
• Peter I, Count of Saint-Pol
• Peter I, Count of Urgell
• Peter I, Duke of Bourbon
• Peter I, Duke of Brittany
• Peter I, Grand Duke of Oldenburg
• Peter of Castile
• Peter the Great
• Petru I of Moldavia
• Pope Peter I of Alexandria
• Saint Peter