| Loes Markerink | |
| Birth Date: | 14 December 1985 |
| Birth Place: | Delfzijl, Netherlands |
| Discipline: | Road cycling |
| Proyears1: | 2004–2006 |
| Proteam1: | @Work Cycling Team |
| Proyears2: | 2007–2009 |
| Proteam2: | Team Flexpoint |
| Proyears3: | 2010 |
| Proteam3: | Nederland Bloeit |
| Show-Medals: | yes |
Loes Markerink (born 14 December 1985 in Delfzijl) is a road cyclist from the Netherlands. She won at the 2003 UCI Road World Championships the junior women's road race and finished second in the women's junior time trial. As a senior, she has won a stage in several stage races: Tour de Bretagne, Damesronde van Drenthe, Grande Boucle Féminine Internationale, Holland Ladies Tour and Gracia–Orlová.[1] [2]