The 2018 Basketball Champions League (BCL) Final Four was the second Basketball Champions League tournament. It was the concluding phase of the 2017–18 Basketball Champions League season.

The O.A.C.A. Olympic Indoor Hall, which is a part of the Spyros Louis Olympic Athletic Center of Athens, was completed in 1994 and is the largest indoor venue in Greece. It was used for sporting events at the 2004 Summer Olympics. The venue is located in Marousi, in the northern section of Athens. During its construction, it was considered to be one of the biggest and most modern indoor sports arenas in all of Europe.