Axel Hermansen Cappelen (20 July 1858 – 13 November 1919) was a Norwegian surgeon. He was born in Selje as a son of district physician Johan Nicolay Cappelen (1818–1890) and Elisabeth Brunchorst Ravn (1825–1906). His brother Christian was also a physician, and through him, Axel was an uncle of Minister of Justice Johan Cappelen. He was a fellow of the German Society of Surgery. In August 1918 he was decorated as a Knight, First Class of the Order of St. Olav. He died in November 1919 from meningitis. A bust of him was unveiled outside of Stavanger Hospital in 1934.