Paul Gruda Koht (7 December 1913 – 26 March 2002) was a Norwegian diplomat.
In 1938 he was hired as a secretary in the Ministry of Foreign Affairs, which was headed by his father.
He was stationed at the Norwegian legation in București for some time, but left in November 1939.
Following the German attack on Norway in April 1940 he briefly served as liaison for French forces fighting at Narvik, before serving as a diplomat in London, Tokyo and New York City.
In 1953 he was appointed deputy under-secretary of state in the Ministry of Foreign Affairs.