Redigerer Airco DH 9.A (avsnitt)

==Operatører==
;{{flagg|AFG}}
*[[Afghan Air Force]] – Airco DH.9As og Polikarpov R-1s
;{{flagg|AUS}}
*[[Royal Australian Air Force]]: 30 fått som gave i 1920 plus kjøpt som 1921.<ref name=adfs1a1>{{cite web|accessdate=21. desember 2016|title=RAAF A1 de Havilland D.H.9a|publisher=adf-serials.com.au|work=Australian & New Zealand Military Aircraft Serials & History|last=Crick|first=Darren|date=31. mars 2016}}</ref>  The aircraft were in service from 1920 to 1930.<ref name="Jackson p110">Jackson 1987, p. 110.</ref>
;{{flag|CAN}}
*[[Canadian Air Force (1918-1920)]]
*[[Royal Canadian Air Force]]
;{{flag|Iran}}
*[[Imperial Iranian Air Force]]
;{{flag|Latvia}}
*[[Latvian Air Force]]
;{{flagg|MGL}}
*[[Mongolian People's Army|Mongolian People's Air Force]] : Polikarpov R-1s and R-2s
;{{flagg|Sveits}}
*[[Swiss Air Force]] : Kun ett fly.
;{{Flagg|UK}}
*[[Royal Air Force]]<ref name="Bowyer Profile p48">Bowyer 1974, p. 48.</ref>
;{{USA}}
*[[United States Navy]]
*[[United States Marine Corps]]
;{{Flag|USSR}}
*[[Soviet Air Force]] : Polikarpov R-1s and R-2s