The 2023 RD Open was a professional tennis tournament played on green clay courts.

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

It took place in Santo Domingo, Dominican Republic between 7 and 13 August 2023.

The following players received wildcards into the singles main draw: The following player received entry into the singles main draw using a protected ranking: The following players received entry from the qualifying draw: