|Full name||Roger Ljung|
|Date of birth||8 January 1966|
|Place of birth||Lomma, Sweden|
|Height||1.88 m (6 ft 2 in)|
|Playing position||Left back|
|* Senior club appearances and goals counted for the domestic league only|
Born in Lomma, Scania, Ljung started his football career at the age of six, with lowly Lunds BK. In 1985, he was purchased by Malmö FF, being mostly used as a substitute in his early years and being on the roster as the club won five Allsvenskan championships in a row, with the player contributing regularly in the 1987 and 1988 editions.
In the summer of 1989, Ljung transferred to BSC Young Boys in Switzerland, moving in the following season to another side in the Swiss Super League, FC Zürich. He enjoyed his best individual years in Austria with FC Admira Wacker, scoring 26 Bundesliga goals in 67 games in his first two years combined, albeit without team silverware.
In 1994, after some months in Turkey with Galatasaray SK, Ljung signed with MSV Duisburg from Germany. After appearing in less of half of the games during the campaign and also suffering relegation from the Bundesliga, he decided to retire from football at only 29.
Ljung was also selected for the team in UEFA Euro 1992, played on home soil. His contribution to the final third-place was again minimal, as he only featured in the 2–3 semifinal loss against Germany.
In the 1994 World Cup in the United States, Ljung opened the national team's scoring account in a 2–2 group stage draw against Cameroon. This time, he was an undisputed first-choice – playing in six of seven games – and the country eventually finished third.
After retiring from professional football in 1995, Ljung became a sports agent. He started his own agency in Lomma, Roger Ljung Promotion AB, being at the time one of only three licensed agents in the country; newspaper Aftonbladet considered him to be Sweden's most successful agent.
Ljung's most notable client was Freddie Ljungberg, who played several years in the Premier League. He brokered his deal with Arsenal for a £3 million transfer fee, and the pair parted ways in December 2006 when the player signed with mega-agency Creative Artists.
- "Från reservlaget till landslaget" [From the reserve team to the national team] (in Swedish). Sydsvenskan. 24 June 2009. Archived from the original on 1 July 2010. Retrieved 12 May 2012.
- "Svenska fotbollsspelare i Tyskland" [Swedish footballers in German] (in Swedish). Tysk Fotboll. 18 May 2009. Archived from the original on 2 March 2012. Retrieved 12 May 2012.
- "Cameroon – World Cup". RSSSF. Retrieved 1 July 2016.
- Roger Ljung – FIFA competition record
- "Marknaden mättad på agenter" [The market is saturated with agents] (in Swedish). Sydsvenskan. 25 April 2005. Archived from the original on 10 August 2011. Retrieved 12 May 2012.
- "Dahlins nya jobb – agent" [Dahlin's new job – agent] (in Swedish). Aftonbladet. 18 April 2001. Retrieved 12 May 2012.
- "Arsène acts over movie star Freddie". Daily Mirror. 12 January 2007. Retrieved 12 May 2012.
- "Saints interest in Allback confirmed". Sky Sports. 12 January 2007. Retrieved 12 May 2012.
- "One-third of Spurs' fee for Edman went to agents". The Guardian. 20 January 2005. Retrieved 12 May 2012.
- "City let James go to Pompey". The Guardian. 11 August 2006. Retrieved 12 May 2012.
- "Villa complete Scandinavian signing". The Guardian. 18 October 2002. Retrieved 12 May 2012.
- "Teddy Lucic: Jag får mycket bra betalt" [Teddy Lucic: I get very well paid] (in Swedish). Aftonbladet. 12 December 1998. Retrieved 12 May 2012.