Per Willy Guttormsen (born 11 June 1942) is a former Norwegian speed skater and cyclist.

Guttormsen's international breakthrough was his 6th place in the 1964 World Speed Skating Championships, at age 21.

That year he was just outside the Norwegian three-man quota on the long distances at the 1964 Winter Olympics.

The first of these was set in the allround big combination samalogue pointsum event at Madonna di Campiglio at 13–14 January 1968, where the world record to attack was Kees Verkerk's 178.058, set at Bislett in Oslo 11–12 February 1967.

Guttormsen's second world record was the 10000 m result 15:25.9, set during the European Championships at Bislett 28 January 1968, breaking Fred Anton Maier's 15:29.5 from Horten a week earlier.