P37

P37 or P-37 may refer to:

• HMS Upholder (P37), a British Royal Navy submarine of the Second World War
• PZL.37 Łoś, sometimes called the PZL P-37, a Polish Second World War medium bomber
• Curtiss P-37, a modified P-36 Hawk fighter aircraft that never went into full-scale production
• P-37 radar, successor to the P-35 radar used by the Soviet Union
• Papyrus 37, a 3rd century papyrus manuscript of the Gospel of Matthew

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