Born in Fredrikstad, Jørn Andersen's career started at local team Østsiden where he remained until 1982. Subsequently, he moved to Fredrikstad and netted seven goals in 43 Norwegian Premier League appearances. The striker was transferred to Vålerenga ahead of the 1985 season. Andersen was able to score 23 goals in just 22 matches for the Oslo side.
Germany
In 1985, 1. FC Nürnberg signed the Norwegian. In 78 matches Andersen scored 28 goals before he moved to Eintracht Frankfurt. In 1990 Andersen became the first foreign player to be top goalscorer in a season with 18 goals in the Bundesliga. In 1990–91 Andersen played for Fortuna Düsseldorf and returned to the Frankfurt side. After that spell he joined Hamburger SV and Dynamo Dresden to play in the Bundesliga.
Switzerland
From Dresden, Andersen headed to Switzerland and FC Zürich in 1995, but was not successful as he scored only twice in 33 appearances. After the 1997–98 season he left FC Lugano to join FC Locarno.
International career
He made his debut for Norway in 1985 and earned 27 caps, scoring five goals. His last international match was a European Championship qualifying match against Hungary in October 1990, coming on as a substitute for Jahn Ivar Jakobsen.
Managing career
Andersen became youth manager of FC Luzern and returned to Germany again to manage the then-second tier team Rot-Weiß Oberhausen from 2003 until 2004. After that spell he assisted Horst Köppel at Borussia Mönchengladbach. In May 2007, he signed to Greek top-flight team Skoda Xanthi to manage them from 2007–08 on, but in June 2007 the contract was dissolved for private reasons. manager during a press conference in December 2011 In late 2007, he signed for 2. Bundesliga strugglers Kickers Offenbach, but was unable to save them from relegation. On 20 May 2008, he signed a two-year deal with 2. Bundesliga outfit Mainz 05, and under his reign the team achieved promotion to the Bundesliga. Despite the team's success, Andersen was fired on 3 August 2009. Mid December 2010, he was named manager of the Greek Super League team Larissa. After on 24 days in office, where the team lost three league matches and was knocked out of the cup competition, without scoring a single goal, he was let go. Six months later, Andersen returned to Germany take charge of second division side Karlsruher SC. Andersen became manager of Austria Salzburg on 2 January 2015. After leaving Austria Salzburg in December 2015, Andersen was appointed as manager of North Korea in May 2016. It marked the first time North Korea had appointed a foreign manager since 1991. In 2018, he departed away from North Korea after two years working with the team. In June 2018, he was announced as the new manager of South Korean side Incheon United, in the K-League. He was sacked on 15 April 2019 with Incheon at the bottom of the table after collecting just four points from seven matches.
