|Date of birth||20 September 1961|
|Place of birth||Zaandam, Netherlands|
|Height||1.80 m (5 ft 11 in)|
|* Senior club appearances and goals counted for the domestic league only|
He is the son of Dutch international footballer Martin Koeman, and, alongside his younger brother Ronald, has also represented the Netherlands. All three Koemans played for Groningen at some time during their careers. Erwin Koeman's son, Len, is also a footballer and currently plays for the Helmond Sport youth team.
Ronald Koeman, his younger brother, is currently coach of the Netherlands national football team.
Koeman finished his playing career with Groningen in 1998 and became youth coach at PSV. In October 2001, he was promoted to assistant manager under Eric Gerets, and for the 2004–05 season became manager in RKC Waalwijk. He managed RKC for one season before moving to Feyenoord. In March 2006, he extended his contract to the summer 2009. However, on 3 May 2007, Koeman announced his immediate resignation due to motivational problems, after a troublesome season, where Feyenoord eventually finished seventh.
Starting on 1 May 2008, Koeman became the coach of the Hungary national football team. He was removed from his post on 23 July 2010.
Before the 2011–12 season, he was appointed as the new manager of FC Utrecht. However, on 18 October 2011 he quit the job citing bad working conditions and frustration after several key players had been sold.
On 16 June 2014, he was appointed as the assistant head coach of Southampton, where he worked alongside his brother, Ronald, for the first time.
On 17 June 2016, Ronald Koeman, his brother, named him as his assistant manager at Everton.
In February 2019, he was appointed as the new head coach of Oman, succeeding fellow Dutch national Pim Verbeek. Under his tenure, the Omani team participated in the 2022 FIFA World Cup qualification – AFC Second Round where they managed an impressive performance with only one lone defeat to Qatar away by one goal margin, winning the other games. This impressive performance of Oman, however, was not followed in the 24th Arabian Gulf Cup, where Oman as champions, were eliminated from the group stage. He was subsequently fired as coach of Oman.
- As of match played 2 December 2019
|RKC Waalwijk||July 2004||June 2005||38||15||10||13||39.47|
|Feyenoord||July 2005||May 2007||81||38||21||22||46.91|
|Hungary||April 2008||July 2010||20||7||4||9||35.00|
|Utrecht||July 2011||October 2011||10||3||4||3||30.00|
|Eindhoven||March 2012||June 2012||9||3||2||4||33.33|
|RKC Waalwijk||July 2012||June 2014||75||18||23||34||24.00|
|Fenerbahce||November 2018||December 2018||9||3||3||3||33.33|
- "Erwin Koeman". Retrieved 30 December 2014.
- imdb.com: Erwin Koeman
- nemzetisport.hu: A hétköznapok is a fociról szólnak (in Hungarian)
- goal.com: Hungary Coach Erwin Koeman Targets Euro 2012 Qualification
- footballdatabase.com: Netherlands
- rsssf.com: Erwin Koeman
- netherlands.worldcupblog.org: Erwin Koeman to Hungary: another export! Archived 11 August 2010 at the Wayback Machine
- Népszabadság online: Orbán rárúgja az ajtót Koemanra (in Hungarian)
- origo.hu: Erwin Koeman ült le a Feyenoord kispadjára (in Hungarian)
- origo.hu: Erwin Koeman felállt a Feyenoord-kispadról (in Hungarian)
- mlsz.hu: Erwin Koeman az új szövetségi kapitány (in Hungarian)
- A Magyar Labdarúgó Szövetség elnökségének közleménye (in Hungarian)
- Koeman resigns as Utrecht manager
- "Koeman appointed First Team Manager". Southampton FC. 16 June 2014. Retrieved 16 June 2014.
- "Archived copy". Archived from the original on 2 August 2018. Retrieved 20 July 2016.CS1 maint: archived copy as title (link)