P34

P34 or P-34 may refer to:

• P34, a state first class road in Latvia
• The protein encoded by the Cdk1 gene
• Tyrrell P34, a Formula One race car
• HMS Ultimatum (P34), a British Royal Navy Second World War submarine
• P-34, pennant number of the ARA Santisima Trinidad (1948), an Argentine Navy frigate
• INS Ajay (P34), an Indian Navy corvette
• Papyrus 34, a manuscript of the Pauline epistles