P63 may refer to:

Vessels , a submarine of the Royal Navy , a corvette of the Indian Navy , an offshore patrol vessel of the Irish Naval Service

Other uses Bell P-63 Kingcobra, an American fighter aircraft BMW P63, an automobile engine Papyrus 63, a biblical manuscript TP63, tumor protein p63 P63, a state regional road in Latvia P63, three-dimensional space group number 173