363rd

363rd or 363d may refer to:


 * 363d Air Expeditionary Operations Group, inactive United States Air Force unit
 * 363d Bombardment Squadron or 19th Antisubmarine Squadron, inactive United States Air Force unit
 * 363d Fighter Squadron or 164th Airlift Squadron, unit of the Ohio Air National Guard 179th Airlift Wing located at Mansfield Lahm Air National Guard Base, Ohio
 * 363d Intelligence, Surveillance and Reconnaissance Wing 361st Intelligence, Surveillance and Reconnaissance Group
 * 363rd Volksgrenadier Division (Wehrmacht), a volksgrenadier division of the Heer (German Army) during the Second World War