The 2019 Sofia Open was a men's tennis tournament to be played on indoor hard courts. It was the fourth edition of the Sofia Open as part of the ATP Tour 250 series of the 2019 ATP Tour. It took place at the Arena Armeec in Sofia, Bulgaria, from 5 February until 11 February 2019. Third-seeded Daniil Medvedev won the singles title.
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following pairs received wildcards into the doubles main draw: