The Hungarian Open was a professional men's tennis tournament played on outdoor red clay courts. It was part of the ATP Tour 250 series of the Association of Tennis Professionals (ATP) Tour. It was held annually in April in Budapest, Hungary.^[1] This is the first ATP event hosted in Hungary and it run by the Hungarian Tennis Association.^[2] 2017 was the inaugural edition and 2019 was the last edition. Matteo Berrettini was the event's last singles champion. The tournament was replaced by the Serbia Open scheduled to return to the calendar in April 2021.