Chantal Blaak is a Dutch road racing cyclist. She was the Dutch national time trial champion as a junior in 2006 and 2007. She was European under-23 road race champion in 2009 and was also third in the Ronde van Drenthe race of the UCI Women’s Road World Cup in that year.
Blaak began her professional career in 2008 with the Dutch AA Drink Cycling Team and remained with them until they disbanded at the end of 2012, after which she raced for the US team TIBCO / To The Top for a year. In 2014 she joined Specialized–lululemon and won her first UCI Women’s Road World Cup race, the Open de Suède Vårgårda. Subsequently it was announced that Blaak would leave the team, along with sponsors Specialized Bicycle Components and lululemon Athletica and team-mate Evelyn Stevens to the Boels Dolmans Cycling Team for 2015