Johansson playing for Sweden U21 in 2013
|Full name||Mattias Johansson|
|Date of birth||16 February 1992|
|Place of birth||Jönköping, Sweden|
|Height||1.74 m (5 ft 8 1⁄2 in)|
|Playing position||Right back|
* Senior club appearances and goals counted for the domestic league only and correct as of 23 September 2018|
‡ National team caps and goals correct as of 21 August 2017
AZ Alkmaar signed Johansson on a 4-year contract for a fee of around €1.5 million on 27 January 2012. On 1 August 2017, according to Panathinaikos officials, the Swedish right defender, who was recently released from AZ Alkmaar, will continue his career in Greece with the jersey of Panathinaikos. The Swedish right back signed as a free agent after his release from AZ Alkmaar. On 16 September 2018, the Swedish scored a brace when Giannis Bouzoukis, intercepted the ball and did well to serve the Swede international, who produced a great finish to put Panathinaikos in front in the 28th minute, following a great solo in the second half, scoring his second goal in the match in a hammering 3-1 away win game against AEL.  On 23 September, 2018 he scored for the second game in the row, the 3rd goal of Panathinaikos at the 3-0 victory against Levadiakos, a goal that made him the top scorer of Panathinaikos after 4 games.
- As of 24 September 2018
(* Include UEFA Europa League)
(** Include Johan Cruyff Shield)
- "Officiellt: Mattias Johansson klar för AZ Alkmaar". Fotbolltransfers. Retrieved 6 August 2012.
- Uppgifter: Johansson blir nästa svensk i Panathinaikos
- "Τρένο" ο Παναθηναϊκός, 3-1 την ΑΕΛ με δυο γκολ του Γιόχανσον
- "Mattias-Johansson". Soccerway. Retrieved 24 September 2018.