Mats Kristoffer Olsson (born 30 June 1995) is a Swedish professional footballer who plays as a midfielder for Danish club FC Midtjylland and the Sweden national team.

He scored his first goal for Arsenal against the Indonesia national team at Gelora Bung Karno Stadium, Jakarta following a cross from Tomáš Rosický.

[16] Olsson has represented Sweden at various youth levels and his style of play has been compared to former Swedish Arsenal players such as Freddie Ljungberg and Sebastian Larsson.

[18] On 20 November 2018, Olsson played his first competitive match for Sweden against Russia at Friends Arena in Stockholm, in the 2018–19 UEFA Nations League.

[citation needed] It ended as a 2–0 victory for the home side, which earned Sweden promotion to League A in the next edition of the tournament, as well as a play-off spot for UEFA Euro 2020.

On 14 April, the club announced that Olsson had made significant progress, regaining motor control and his ability to speak, while continuing his rehabilitation at Hammel Neurocenter.