| Birth Date: | 30 June 1981 |
| Birth Place: | Waalwijk, Netherlands |
| Currentteam: | Retired |
| Discipline: | Road |
| Role: | Rider |
| Amateurteam1: | Team Brabant 2000 |
| Amateuryears1: | 2006 |
| Amateurteam2: | TCW Het Snelle Wiel |
| Amateuryears2: | 2007 |
| Amateurteam3: | NWVG |
| Amateuryears3: | 2015 |
| Proteam1: | Red Sun Cycling Team |
| Proyears1: | 2009–2010 |
| Proyears2: | 2011–2012 |
| Proyears3: | 2013–2014 |
Mascha Pijnenborg (born 30 June 1981) is a Dutch retired road racing cyclist.
Pijnenborg began racing at an amateur level in 2006. In 2008 she was a guest rider with Red Sun Cycling Team at the Tour Cycliste Féminin International de l'Ardèche.[1] Following this she joined the team for 2 years.
She spent her 2 most successful seasons at, before joining for the final two years of her career.
Pijnenborg is also a counselor for people living with disabilities.