Henrik Johan Florentz Groth (11 October 1903 – 10 August 1983) was a Norwegian publisher and essayist, who was managing director of the Cappelen publishing company from 1947 to 1973.
The son of a banker, he was hired in the publishing house J.W. Cappelens Forlag in 1927, and continued to climb the career ladder there.
During the German occupation of Norway he eventually joined the Norwegian resistance movement. As a member of Hjemmefrontens kulturutvalg, he took part in shaping the Norwegian culture policy to come after the war's end. He was arrested for "illegal activity" in January 1944, and was incarcerated at Grini concentration camp from March 1944 to March 1945.
After the war's end, in 1945, Groth returned to his old post in Cappelen. He became director in 1947, and stepped down in 1973. He made a lasting remark, founding the series Cappelens upopulære skrifter. Groth was the chairman of the Norwegian Booksellers Association from 1950 to 1956, of the Norwegian Publishers Association from 1950 to 1956 and of the Foreningen Norden from 1959 to 1968. He was also a noted essayist of his own, and received the Fritt Ord Award in 1977.
His first cousin was Henriette Bie Lorentzen.