Adolf Hitler · Gary Cooper Were Adolf Hitler and Gary Cooper alive at the same time? Yes. Adolf Hitler and Gary Cooper were alive at the same time for 43 years, from 1901 to 1945. Adolf Hitler was 12 when Gary Cooper was born.Gary Cooper was 43 when Adolf Hitler died, aged 56. Adolf HitlerDictator of Germany from 1933 to 1945Born 20 April 1889 · died 30 April 1945, aged 56Gary CooperAmerican actorBorn 7 May 1901 · died 13 May 1961, aged 60 Mahatma GandhiVladimir LeninAlbert EinsteinAdolf HitlerGary CooperRonald ReaganNelson MandelaDonald TrumpVladimir PutinMichael Jackson Adolf Hitler and Gary Cooper in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.