P48 or P.48 may refer to:
Aircraft Douglas XP-48, a cancelled American fighter aircraft Partenavia P.48 Astore, an Italian prototype light aircraft Percival P.48 Merganser, a British civil utility aircraft
Other uses BMW P48 Turbo engine, an automobile engine BRM P48, a Formula One racing car , a P-class sloop of the Royal Navy , a submarine of the Royal Navy Papyrus 48 or P48, an early copy of a part of the New Testament in Greek Pleasant Valley Airport, in Maricopa County, Arizona, United States PTF1A, pancreas transcription factor 1 subunit alpha P48, a Latvian state regional road P48, a phantom power standard