Konstantin Osvet (pseudonyms including K. Vibulane, Salmi-Jaak, and Leeno Tuvvike;[1] May 20, 1889 – April 3, 1946)[2] was an Estonian journalist and caricaturist.
Starting in 1914, he worked as a professional journalist in the editorial office of the newspaper Meie Tallinna Ajaleht [et].
During the First World War I (1915–1918), he worked as an office clerk at the Lessner factory in Saint Petersburg,[7] and he was also the editor of the humor and satire magazine Wana Meie Mats [et].
[7] In 1921, Osvet returned to Estonia, and from 1921 to 1935 he worked in the editorial office of the newspaper Kaja.
On September 8, 1945, a tribunal sentenced him to eight years' imprisonment under Article 58-3 ("contacts with foreigners with counter-revolutionary purposes").