P63
P63 may refer to:
Vessels
- HMS Unswerving (P63), a submarine of the Royal Navy
- INS Kulish (P63), a corvette of the Indian Navy
- LÉ William Butler Yeats (P63), 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