303 Squadron or 303rd Squadron may refer to:
No. 303 Squadron RAF, a Polish squadron during the Second World War Squadron 303 (book) Hurricane: 303 Squadron, a 2018 film 303 Squadron (film), a 2018 film No. 303 Squadron RNLAF, a search and rescue unit of the Royal Netherlands Air Force 1959–2015 303rd Aero Squadron, an American aero squadron, 1918 303d Fighter Squadron (World War II), United States Army Air Forces, later 139th Airlift Squadron 303rd Fighter Squadron, a World War II United States Army Air Forces unit formed as 303d Troop Carrier Squadron 303rd Intelligence Squadron, United States Air Force 303rd Expeditionary Rescue Squadron, United States Air Force