1 Squadron

No. 1 Squadron is an air force squadron in several countries:

United Kingdom

 * No. 1 Squadron Royal Air Force, also was No. 1 Squadron Royal Flying Corps
 * No. 1 Squadron RAF Regiment
 * No. 1 Squadron Royal Naval Air Service, now No. 201 Squadron RAF

Australia

 * No. 1 Squadron Royal Australian Air Force
 * No. 1 Airfield Operations Support Squadron Royal Australian Air Force
 * No. 1 Airfield Defence Squadron Royal Australian Air Force

Other countries

 * No. 1 Squadron Royal New Zealand Air Force
 * No. 1 Squadron Indian Air Force
 * No. 1 Squadron South African Air Force
 * No.1 Squadron Belgian Air Force

United States Air Force

 * 1st Air and Space Test Squadron
 * 1st Airborne Command and Control Squadron
 * 1st Airlift Squadron
 * 1st Combat Communications Squadron
 * 1st Fighter Squadron
 * 1st Helicopter Squadron
 * 1st Reconnaissance Squadron
 * 1st Space Control Squadron
 * 1st Space Development Squadron
 * 1st Space Launch Squadron
 * 1st Space Operations Squadron
 * 1st Special Operations Squadron

United States Navy

 * VBF-1
 * VF-1