109 Squadron

109 Squadron or 109th Squadron may refer to:


 * 109th Signals Squadron, Royal Australian Corps of Signals
 * 109th Squadron (Iraq)
 * 109 Squadron (Israel)
 * 109 Squadron SAAF, South Africa
 * No. 109 Squadron RAF, United Kingdom
 * 109th Airlift Squadron, United States Air Force
 * VPB-109, United States Navy