| Date: | 19–25 October |
| Edition: | 5th |
| Category: | ATP Tour 250 Series |
| Prize Money: | €394,800 |
| Draw: | 28S / 16D |
| Surface: | Hard / indoor |
| Location: | Antwerp, Belgium |
| Champs: |  Ugo Humbert |
| Champd: |  John Peers /  Michael Venus |
| Main Name: | European Open (tennis) European Open |
The 2020 European Open was a men's tennis tournament played on indoor hard courts. It was the fifth edition of the European Open and part of the ATP Tour 250 series of the 2020 ATP Tour. It took place at the Lotto Arena in Antwerp, Belgium, from October 19 to October 25.[1]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Belgium | David Goffin | 14 | 1 | |
 Spain | Pablo Carreño Busta | 15 | 2 | |
 Russian Federation | Karen Khachanov | 17 | 3 | |
| Grigor Dimitrov | 19 | 4 | ||
 Canada | Milos Raonic | 21 | 5 | |
 Serbia | Dušan Lajović | 24 | 6 | |
| Taylor Fritz | 28 | 7 | ||
| Australia | Alex De Minaur | 29 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Nikoloz Basilashvili → replaced by Richard Gasquet
Matteo Berrettini → replaced by Aljaž Bedene
Kei Nishikori → replaced by 
Federico Coria Fabio Fognini → replaced by Feliciano López Pablo Andújar Andrey Rublev → replaced by 
Frances Tiafoe
Casper Ruud → replaced by Tommy Paul| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Colombia | Colombia | |||||
| Australia | John Peers | New Zealand | Michael Venus | 38 | 2 | |
| France | Fabrice Martin | Jean-Julien Rojer | 46 | 3 | ||
 United Kingdom | Jamie Murray | United Kingdom | Neal Skupski | 51 | 4 | |
| Belgium | Sander Gillé | Belgium | Joran Vliegen | 78 | 5 |
The following pairs received wildcards into the doubles main draw:
The following pairs received entry as an alternates:
See main article: 2020 European Open – Singles.
Ugo Humbert def. Alex de Minaur, 6–1, 7–6(7–4)See main article: 2020 European Open – Doubles.
John Peers / Michael Venus def. 
Rohan Bopanna / Matwé Middelkoop, 6–3, 6–4