P89

P89 may refer to:

• DLR P89 stock, a passenger train on the Docklands Light Railway in London, UK
• HMAS Assail (P 89), a patrol boat of the Royal Australian Navy
• Northrop XP-89, an American prototype fighter aircraft
• Papyrus 89, a biblical manuscript
• Ruger P89, a pistol
• P89, a state regional road in Latvia