Harmen Jonkman

Harmen Jonkman is a Dutch chess grandmaster.

Chess career
In January 2005, he finished in 6th place in the Corus Chess Tournament 2005. At the tournament, he managed to win against the higher-rated Manuel Bosboom.

In April 2016, he won the 9th OGD Rapid Chess Tournament, defeating Johan Quist due to better tiebreaks.

In August 2017, he was held to a draw by Vantika Agrawal at the Abu Dhabi Masters, who also scored her first WGM norm.