Haakon Jansen
Haakon Jansen was a Norwegian long-distance runner.
He was born in Kristiania, and represented the club IK Tjalve. He competed in the Athletics at the 1924 Summer Olympics – Men's 3000 metres [team race|3000 metres team race] at the 1924 Summer Olympics, along with team mates Nils Andersen, Johan Badendyck and Hans Gundhus. He had modest success on the domestic level, only collecting a single national silver medal from the 5000 metres in 1923.