|Full name||Johan Mårtensson|
|Date of birth||16 February 1989|
|Place of birth||Skövde, Sweden|
|Height||1.80 m (5 ft 11 in)|
|2008||→ Skövde AIK (loan)||9||(5)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 18 May 2014.
‡ National team caps and goals correct as of 19 January 2015
During his career at GAIS, he first came from the third tier club Skövde AIK and, therefore, had some time to adapt to compete at a higher level. Mårtensson progressed pretty fast, and he shortly became a key player at GAIS's midfield. He showed that he was a great box to box player with good stamina, but also good vision for the game that worked out well with his capable technique. Although he's quite young and been capped several times for the Swedish U21 team, he is a bit underrated, maybe because GAIS isn't one of the biggest clubs in Allsvenskan. During the 2011 season of Allsvenskan, Mårtensson had improved even more since the season before and showed that on the pitch. A bunch of European clubs were following him, with especially some sharp eyes from the Dutch club of FC Utrecht.
On 9 July 2011, both GAIS and FC Utrecht confirmed that Mårtensson had signed a four-year contract with the Dutch side. It was an undisclosed fee, but Mårtensson was valued at about 1.5 million Euros at that time.
Mårtensson was included in the Sweden squad for their friendly against Ivory Coast on 15 January 2015, scoring on his debut.
- Score and result list Sweden's goal tally first.
|1.||15 January 2015||Zayed Sports City Stadium, Abu Dhabi||Ivory Coast||1–0||2–0||Friendly|