| Date: | 8–14 November |
| Edition: | 5th |
| Category: | ATP Tour 250 Series |
| Prize Money: | €325,615 |
| Draw: | 28S /16D |
| Surface: | Hard / indoor |
| Location: | Sofia, Bulgaria |
| Venue: | Arena Armeec |
| Champs: |  Jannik Sinner[1] |
| Champd: |  Jamie Murray / Neal Skupski[2] |
| Main Name: | ATP Sofia Open Sofia Open |
The 2020 Sofia Open was a men's tennis tournament played on indoor hard courts. It was the fifth edition of the Sofia Open as part of the ATP Tour 250 series of the 2020 ATP Tour. Originally scheduled for 28 September to 4 October at the Arena Armeec in Sofia, Bulgaria, but due to the COVID-19 pandemic it was rescheduled to 8 November until 14 November 2020. Unseeded Jannik Sinner won the singles title.[3]
See main article: article and 2020 Sofia Open – Singles.
Jannik Sinner defeated 
Vasek Pospisil, 6–4, 3–6, 7–6(7–3)See main article: article and 2020 Sofia Open – Doubles.
Jamie Murray / Neal Skupski defeated 
Jürgen Melzer / 
Édouard Roger-Vasselin, walkover| width=70 | Country | width=175 | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| Canada | Denis Shapovalov | 12 | 1 | ||
| Canada | Félix Auger-Aliassime | 21 | 2 | ||
 Australia | Alex de Minaur | 25 | 3 | ||
| Jan-Lennard Struff | 35 | 4 | |||
| France | Adrian Mannarino | 36 | 5 | ||
| Australia | John Millman | 38 | 6 | ||
 Georgia | Nikoloz Basilashvili | 39 | 7 | ||
| Marin Čilić | 43 | 8 |
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:
Jannik Sinner
Roberto Bautista Agut → replaced by Adrian Mannarino Pablo Carreño Busta → replaced by 
Andrej Martin Fabio Fognini → replaced by Marin Čilić
Taylor Fritz → replaced by Salvatore Caruso
Karen Khachanov → replaced by 
Illya Marchenko
Filip Krajinović → replaced by Roberto Carballes Baena Dušan Lajović → replaced by 
Egor Gerasimov Gaël Monfils → replaced by Martin Kližan
Kei Nishikori → replaced by 
Márton Fucsovics Milos Raonic → replaced by 
Radu Albot
Casper Ruud → replaced by John Millman
Diego Schwartzman → replaced by Yūichi Sugita| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Austria | Jürgen Melzer | France | Édouard Roger-Vasselin | 49 | 1 | |
| United Kingdom | Jamie Murray | United Kingdom | Neal Skupski | 50 | 2 | |
| Australia | Max Purcell | Australia | Luke Saville | 75 | 3 | |
 Belgium | Sander Gillé | Belgium | Joran Vliegen | 78 | 4 |
The following pairs received wildcards into the doubles main draw:
