The 2018 Hungarian Challenger Open was a professional tennis tournament played on indoor hard courts. It was the third edition of the tournament and was a part of the 2018 ATP Challenger Tour. It took place in Budapest, Hungary between 5 and 11 February 2018.
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw: