Arnar Grétarsson (born 20 February 1972 in Reykjavík) is an Icelandic former professional football player and former manager of Valur.
After his contract expired in 2000, Arnar signed for Belgian club K.S.C.
Arnar made his debut for Iceland in the famous 5–1 shock defeat of Turkey in a September 1991 friendly match.
[2] In 2013, he was appointed as Sporting Director with Belgian team Club Brugge.
[3] In late 2014 he was appointed as Manager of Breiðablik ahead of the 2015 season.