Mathias Haarup (born 10 February 1996) is a Danish footballer who plays as a right-back or left-back for Vendsyssel FF.
In December 2016, Haarup went on a trial at Skive IK, without getting offered any contract at the end.
After playing in the Denmark Series and a half year in the Danish 2nd Division, he finally reached the top league, after re-signing for newly-promoted Danish Superliga club Hobro IK on 21 June 2017.
He started on the bench, but replaced Danny Olsen in the 89th minute in a 1-1 draw against AaB in the Danish Superliga.
[6] On 11 March 2022, Haarup signed for Norwegian Eliteserien club FK Jerv until the end of 2023.