Otokar Lahman (20 June 1899 in Makarska – 18 August 1928 in Rogač) was a Croatian magazine editor, literary critic and demographer.
Following the Invasion of Yugoslavia during Second World War and subsequent establishment of the Axis puppet state of the Independent State of Croatia (NDH), Lahman was employed as the head of accounting of the NDH's Ministry of People's Education.
After the war, Lahman graduated from the Faculty of Science, University of Zagreb in 1949.
In 1948–1950, Lahman was the secretary of the Yugoslav Academy of Sciences and Arts and then a clerk in the Presidency of the Government of the People's Republic of Croatia and the Yugoslav Investment Bank.
[1] In 1920s and 1930s, Lahman published literary reviews and various articles exploring maritime issues.