| Country: | Netherlands |
| Birth Date: | 12 February 1968 |
| Birth Place: | Leeuwarden, Netherlands |
| International Master (1993) | |
| Peakrating: | 2452 (March 2012) |
| Fideid: | 1000470 |
Mark van der Werf is a Dutch chess player.
In January 1995, he competed in the Hoogovens Wijk aan Zee Chess Tournament 1995, where he was knocked out in the first round by Alexander Khalifman.[1]
In January 2011, he played in Group C of the Tata Steel Chess Tournament 2011, where he scored wins against grandmasters Kateryna Lagno and Dariusz Świercz.[2]
In January 2013, he played in Group C of the Tata Steel Chess Tournament 2013, where he held draws against grandmasters Fernando Peralta and Alexander Kovchan.[3]
In June 2023, he finished tied for first in the Open 50+ section of the European Senior Chess Championship, but ended up in 5th place due to tiebreaks.[4]