|Full name||Nico-Jos Theodoor Vaesen|
|Date of birth||28 September 1969|
|Place of birth||Hasselt, Belgium|
|Height||1.91 m (6 ft 3 in)|
|1995–1998||K.S.C. Eendracht Aalst||34||(0)|
|2003–2004||→ Gillingham (loan)||5||(0)|
|2004||→ Bradford City (loan)||6||(0)|
|2004||→ Crystal Palace (loan)||10||(0)|
|2008||K.F.C. Verbroedering Geel|
|* Senior club appearances and goals counted for the domestic league only.
Nico-Jos Theodoor Vaesen (born 28 September 1969) is a Belgian former footballer who played as a goalkeeper. He retired from football shortly after joining Lierse, but returned to the game in 2008 with K.F.C. Verbroedering Geel for one season where his contract wasn't renewed.
Born in Hasselt, Belgium, Vaesen spent his first professional season at Belgian sides Cercle Brugge and K.S.C. Eendracht Aalst, and on 21 May 1998 moved to English side Huddersfield Town. He was sent off on his debut, but went on to play 135 league games. During his first season for the club, he won the club's Supporters' Player of the Year. After three years at Huddersfield, on 18 June 2001, he signed for Birmingham City.
He was given the first-choice goalkeeper role at Birmingham, helping the club win promotion to the Premier League via the play-offs in 2002. A memorable moment in the promotion season was saving a Gary Holt penalty in a 1-0 over Norwich City. Birmingham would go on to meet Norwich again in the play-off final and this time Vaesen saved from Philip Mulryne in the shootout. However a cruciate knee injury in March 2003 put him out of the game for nine months. During this time Maik Taylor was brought in and established himself as first-choice goalkeeper. On Christmas Eve 2003, he was loaned to Gillingham for one and a half months, during which time he participated in five games. Spells at Bradford City and Crystal Palace, with whom he took part in another play-off final victory, followed in 2004. At the end of that season he signed a new two-year contract with Birmingham, intending to compete for a first-team place. He finally dislodged Taylor in late 2005, but a 4–1 defeat at Manchester City, in which he conceded a penalty and was later sent off, proved to be his last first-team appearance before he was released at the end of the 2005–06 season due to Birmingham's relegation.
- "Norwich rue penalty save". BBC. 15 March 2002. Retrieved 29 August 2016.
- "Birmingham reach Premiership". BBC. 12 May 2002. Retrieved 29 August 2016.
- "Vaesen set for loan deal". BBC Sport. 2003-10-27. Retrieved 2008-06-03.
- "Crystal Palace 1-0 West Ham". BBC Sport. 2004-05-29. Retrieved 2008-06-03.
- "Vaesen signs new contract". BBC Sport. 2004-07-29. Retrieved 2008-06-03.
- "Sunderland 0-1 Birmingham". BBC Sport. 2005-11-26. Retrieved 2008-06-03.
- "Man City 4-1 Birmingham". BBC Sport. 2005-12-17. Retrieved 2008-06-03.
- "Birmingham release seven players". BBC Sport. 2006-05-09. Retrieved 2008-06-03.