The 2026 Play In Challenger was a professional tennis tournament played on indoor hard courts. It was the eighth edition of the tournament, which was part of the 2026 ATP Challenger Tour. It took place in Lille, France, between 16 and 22 February 2026.
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
The following player received entry into the singles main draw through the Next Gen Accelerator programme:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw: