Thorleiv Bugge Røhn (23 July 1881 – 20 September 1963) was a Norwegian Army officer, who as a gymnast was a member of the team that won the gold medal in the team competition at the 1906 Intercalated Games in Athens, Greece.
Facing limited military career prospects in Norway, Røhn sought better fortunes abroad.
Having been involved in a failed business venture in Cuba in 1907–1908, he joined the Belgian colonial army Force Publique in 1909.
He served in the Belgian Congo until being ordered back into active Norwegian Army service in 1915.
Having been a member of the Norwegian fascist party Nasjonal Samling, Røhn was convicted of treason in the Norwegian post-Second World War legal purge.