Kaarlo Ensio Paulus Hiitonen (last name until 1923 Hidén; 27 October 1900 Helsinki – 14 January 1970[1]) was a Finnish Doctor of Law and lawyer of Alko.
Hiitonen's parents were Dr. Karl Julius Hidén and Helmi Liisi Parmanen.
Hiitonen was at the beginning of his career at the Ministry for Foreign Affairs, for example as a contributor to the newspaper division in 1925, a delegation assistant in Paris in 1926, Consul General in The Hague in 1929, Head of the League of Nations branches since 1929, Chargé d'Affaires in Prague 1938–1939 and Bucharest in 1939.
At the end of the 1940s, he served as the editor of the Socialist Unity Party, the weekly magazine Vapaan Pohjola.
In 1953, Hiitonen published the book entitled "Vääryyttä oikeuden valekaavussa", in which he discussed, inter alia, political trials in the 1920s and 1930s and the imprisonment of so-called gang of six at the beginning of the Continuation War.