The 2023 Dutch Open, also known by its sponsored name Van Mossel Kia Dutch Open, was a professional tennis tournament played on clay courts.

It was the fourth edition of the Challenger tournament which was part of the 2023 ATP Challenger Tour.

It took place in Amersfoort, Netherlands between 17 and 23 July 2023.

The following players received wildcards into the singles main draw: The following player received entry into the singles main draw as an alternate: The following players received entry from the qualifying draw: The following players received entry as lucky losers: