Jakob Bernhard Christian Jensen (February 16, 1912 in Odense, Denmark – June 17, 1997) was a Danish flatwater canoeist who competed in the late 1940s. He won a silver in the K-2 1000 m event at the 1948 Summer Olympics in London together with Ejvind Hansen. In the final they did have the lead for the final, but ultimately lost to the Swedish Kajak.

Jensen also won two bronze medals at the 1948 ICF Canoe Sprint World Championships in London, earning them in the K-1 4 x 500 m and the K-2 500 m events.

• ICF medalists for Olympic and World Championships – Part 1: flatwater (now sprint): 1936–2007 at the Wayback Machine (archived 2010-01-05)
• ICF medalists for Olympic and World Championships – Part 2: rest of flatwater (now sprint) and remaining canoeing disciplines: 1936–2007 at WebCite (archived 2009-11-09)
• Evans, Hilary; Gjerde, Arild; Heijmans, Jeroen; Mallon, Bill; et al. "Bernhard Jensen". Olympics at Sports-Reference.com. Sports Reference LLC. Archived from the original on 2020-04-18.