2018 Gazprom Hungarian Open

The 2018 Gazprom Hungarian Open was a men's tennis tournament played on outdoor clay courts. It was the 2nd edition of the Hungarian Open, and part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place at Nemzeti Edzés Központ in Budapest, Hungary, from April 23–29.

Seeds

 * 1 Rankings are as of April 16, 2018

Other entrants
The following players received wildcards into the singles main draw:
 * 🇭🇺 Attila Balázs
 * 🇰🇿 Alexander Bublik
 * 🇭🇺 Zsombor Piros

The following players received entry from the qualifying draw:
 * 🇮🇹 Matteo Berrettini
 * 🇵🇱 Hubert Hurkacz
 * 🇮🇹 Lorenzo Sonego
 * 🇪🇪 Jürgen Zopp

The following players received entry as lucky losers:
 * 🇮🇹 Marco Cecchinato
 * 🇩🇪 Yannick Maden

Withdrawals

 * Before the tournament
 * 🇷🇸 Laslo Đere → replaced by 🇮🇹 Marco Cecchinato
 * 🇺🇦 Alexandr Dolgopolov → replaced by 🇺🇿 Denis Istomin
 * 🇷🇸 Filip Krajinović → replaced by 🇦🇺 John Millman
 * 🇩🇪 Florian Mayer → replaced by 🇩🇪 Yannick Maden
 * 🇨🇿 Jiří Veselý → replaced by 🇷🇺 Mikhail Youzhny

Seeds

 * 1 Rankings are as of April 16, 2018

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇭🇺 Attila Balázs / 🇭🇺 Márton Fucsovics
 * 🇷🇴 Marius Copil / 🇷🇴 Florin Mergea

Singles

 * 🇮🇹 Marco Cecchinato def. 🇦🇺 John Millman, 7–5, 6–4

Doubles

 * 🇬🇧 Dominic Inglot / Franko Škugor def.  Matwé Middelkoop / 🇦🇷 Andrés Molteni, 6–7(8–10), 6–1, [10–8]