Arnor Ingvi Traustason is an Icelandic professional footballer who plays for Swedish club Malmo FF as a midfielder.

Arnor Ingvi signed with Rapid Wien in the summer of 2016. In July 2017 he was linked with a transfer to Greek club AEK Athens. Eventually on 5 July 2017 AEK Athens announced the signing of Traustason on a one-year loan deal with a purchase option of €1,000,000 for the summer of 2018. On 26 October 2017 he scored his first goal for the club in 7-0 away win against Apollon Larissa for the Greek Cup. He was officially set for release from the club on 4 December 2017 as his performances and work rate did not live up to the expectations of experienced Spanish manager Manolo Jimenez. He made only five official performances with the club at the first part of 2017-18 season and signed a three and a half-year contract with Swedish club Malmo FF for an undisclosed fee.

He represented Iceland U21 in the 2013 UEFA European Under-21 Football Championship qualification and the 2015 UEFA European Under-21 Football Championship qualification. He was named as the most promising player of the 2013 urvalsdeild after the season by his fellow urvalsdeild players. Traustason is now a full international player for the Iceland national football team and scored his first goal for the Icelanders in a 1-0 win away to fellow Nordics Finland on 13 January 2016.