Bart Aernouts (born 23 June 1982 in Essen, Belgium) is a professional cyclist who competes mainly in cyclo-cross races.
Aernouts often finishes only a few places behind big names such as Sven Nys, Niels Albert and Zdenek Å tybar, but occasionally manages top results in high calibre races of the Gazet van Antwerpen Trophy or the Superprestige.
He achieved his major wins in Sint-Michielsgestel, where he won both the Junior UCI Cyclo-cross World Championships in 2000 and more recently the Cyclo-cross Sint-Michielsgestel in 2010.Aernouts announced his retirement from professional cyclocross in February, 2015 after illness curtailed his 2014-15 season.