Harry Boye Karlsen (14 March 1920 – 8 January 1994) was a Norwegian international footballer.

[2] Karlsen played as a defender or as a wing-half (defensive midfield), and was used as a free kick and penalty taker.

He joined Dundee United in September 1943, playing regularly for them until being posted to England in January 1945.

He returned to make a few more appearances later in the year, and also played a single match for Exeter City in October 1945.

He moved back to Horten the following year, rejoining his hometown club Ørn, where he also played before the war.