P23 may refer to:
Aircraft Curtiss XP-23 Hawk II, an American experiment fighter Piaggio P.23, an Italian transport PZL P.23 Karaś, a Polish light bomber and reconnaissance aircraft
Other uses , a patrol vessel of the Irish Naval Service Makonde language , of the Armed Forces of Malta Papyrus 23, a biblical manuscript PTGES3, an enzyme Seligman Airport, in Yavapai County, Arizona, United States P23 (space group), number 195