John Adair McDowell may refer to: John Adair McDowell (colonel) (1825–1887), American military officer and engineer John Adair McDowell (major) (1789–1823), American military officer and judge John McDowell (disambiguation)
John Adair McDowell bisa merujuk ke: John Adair McDowell (kolonel) (1825–?), Perwira militer Amerika dan insinyur John Adair McDowell (Mayor) (1789-1823), Perwira militer Amerika dan hakim John McDowell (disambiguasi)