W23

W23 may refer to:


 * W23 (nuclear artillery shell)
 * Bayungu language
 * British NVC community W23, a scrub community in the British National Vegetation Classification system
 * Compound of five octahedra
 * Hansa-Brandenburg W.23, a German flying boat fighter
 * Wanderer W23, a vehicle manufactured by Wanderer
 * Wild Rose Idlewild Airport, in Waushara County, Wisconsin, United States