The 2018 Open du Pays d'Aix was a professional tennis tournament played on clay courts. It was the fifth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Aix-en-Provence, France between 7 and 13 May 2018.
Singles main-draw entrants
Seeds
1 Rankings as of 30 April 2018.
Other entrants
The following players received wildcards into the singles main draw: Elliot Benchetrit Geoffrey Blancaneaux Alexandre Müller Johan Tatlot
The following player received entry into the singles main draw as a special exempt: Nino Serdarušić
The following players received entry from the qualifying draw: Steven Diez Máximo González Gianluca Mager Alexei Popyrin
Champions
Singles
John Millman def. Bernard Tomic 6–1, 6–2.
Doubles
Philipp Petzschner / Tim Pütz def. Guido Andreozzi / Kenny de Schepper 6–7(3–7), 6–2, [10–8].