The 2024 Oeiras Indoors was a professional tennis tournament played on hard courts.

It was the 3rd edition of the tournament which was part of the 2024 ATP Challenger Tour.

It took place in Oeiras, Portugal from 1 to 7 January 2024.

The following players received wildcards into the singles main draw: The following players received entry into the singles main draw using protected rankings: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: