The 2018 Boels Rental Ladies Tour also known as the 2018 Holland Ladies Tour is the 21st edition of the Holland Ladies Tour, a women's cycle stage race held in the Netherlands. The tour is part of the 2018 women's road cycling calendar and is part of the UCI Women's World Tour.

The Holland Ladies Tour is a women's elite professional road bicycle racing stage race held annually in September since 1998 in the Netherlands. It's a tour with 6 or 7 stages. For sponsorship reasons the 2011 race was officially titled the Profile Ladies Tour, the 2012 race the BrainWash Ladies Tour, from 2013 to 2019 as the Boels Rental Ladies Tour, and in 2021 as the Simac Ladies Tour. The race was not held in 2020.