Leopold III ( born as Léopold Philippe Charles Albert Meinrad Hubertus Marie Miguel ( French ) or Leopold Filips Karel Albert Meinrad Hubertus Maria Miguel ( Dutch ) or Leopold Philipp Karl Albert Meinrad Hubertus Maria Miguel ( German ) ; 3 November 1901 - 25 September 1983 ) reigned as King of the Belgians from 1934 until 1951 , when he abdicated in favor of the heir apparent , his son Baudouin .
Leopold III ( born as Léopold Philippe Charles Albert Meinrad Hubertus Marie Miguel ; 3 November 1901 - 25 September 1983 ) was King of the Belgians from 1934 until 1951 .