Sigurd Mathisen (26 April 1883 – 4 March 1919) was a Norwegian speed skater, world champion and world record holder over 500 m. He was an older brother of Oscar Mathisen.

Mathisen won a gold medal at the 1904 World Allround Championships, where he won the 1500 m (shared), 5000 m and 10,000 m races.

[1] All distances were originally won by Peter Sinnerud, but he was later disqualified for professionalism, and Mathisen was declared world champion.

[2] In 1908 Sigurd Mathisen improved the world record on 500 m to 44.4 seconds (sharing the record with Johan Vikander).

This biographical article about a Norwegian speed skater is a stub.