Abram Moriarty
Albert Fink
Alex Moulton
Alexander Allan (locomotive engineer)
Alexander Binnie
Alexander Gibb
Alexander Kennedy
Alexander Lippisch
Alexander Sergeyevich Yakovlev
Alexander Siemens
Alfred Giles (civil engineer)
Alfred Vail
Alice Perry
Alois Senefelder
Andrei Tupolev
Andrew Viterbi
Andrew Vivian
André Rebouças
Anthony George Lyster
Anton Flettner
Anton Freissler
A. K. HuntingtonAbel BuellAdam K. BertAdrian LombardAlan BlumleinAlan Garnett DavenportAlan Muir WoodAlberto DienaAlexander McDonnell (engineer)Alexander ParkesAlexander Ross (engineer)Alfred Lichtenstein (philatelist)Alfred PippardAllan QuartermaineAndreas PavelAndrew Earl WeatherlyAngus FultonAngus PatonAnthony Hunt