Alexander Myhre Moccia Mathisen (born 24 November 1986) is a retired Norwegian footballer.
Born in Oslo, Mathisen played for the youth team of the Italian side Parma. He made his Norway youth international debut in 2002.
In 2004, he made his debut in the Tippeligaen with VÃÂ¥lerenga.
Ahead of the 2008 season, Mathisen joined Aalesund from VÃÂ¥lerenga.