The 2023 ATP Lyon Open (also known as the Open Parc Auvergne-Rhône-Alpes Lyon) was a men's tennis tournament played on outdoor clay courts. It was the 6th edition of the Lyon Open and part of the ATP Tour 250 series of the 2023 ATP Tour. It took place in the city of Lyon, France, from 21 to 27 May 2023.
<sub>*per team</sub>
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates: