The 2018 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 19th edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Bratislava, Slovakia between 5 and 11 November 2018.
Singles main-draw entrants
Seeds
1 Rankings are as of 29 October 2018.
Other entrants
The following players received wildcards into the singles main draw: Norbert Gombos Lukáš Klein Tomáš Líška Alex Molčan
The following player received entry into the singles main draw using a protected ranking: Egor Gerasimov
The following players received entry into the singles main draw as alternates: Filip Horanský Uladzimir Ignatik
The following players received entry from the qualifying draw: Alexander Bublik Johannes Härteis Daniel Masur Jurij Rodionov
Champions
Singles
Alexander Bublik def. Lukáš Rosol 6–4, 6–4.
Doubles
Denys Molchanov / Igor Zelenay def. Ramkumar Ramanathan / Andrei Vasilevski 6–2, 3–6, [11–9].