Jens Arnold Diderich Jensen (24 July 1849 – 24 November 1936) was a Royal Danish Navy officer and explorer.
Jensen assisted the geological exploration along the Greenland west coast.
He is particularly renowned for his explorations of the inland ice sheet.
[1] [failed verification] The geologist of the expedition, A. Kornerup, collected no less than 27 species of Angiosperms on the nunataks.
In 1911, he changed his name to Jens Arnold Diderich Jensen Bildsøe.