The 2018 European Open was a men's tennis tournament played on indoor hard courts.

It was the third edition of the European Open and part of the ATP World Tour 250 series of the 2018 ATP World Tour.

It took place at the Lotto Arena in Antwerp, Belgium, from October 15 to October 21.

[1] The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received entry as lucky losers: The following pairs received wildcards into the doubles main draw: