The 2023 Champaign–Urbana Challenger was a professional tennis tournament played on hard courts.

It was the 27th edition of the tournament which was part of the 2023 ATP Challenger Tour.

It took place in Champaign, Illinois, United States between November 13 and November 19, 2023.

The following players received wildcards into the singles main draw: The following players received entry into the singles main draw as alternates: The following players received entry from the qualifying draw: