2025 Ostra Group Open

The 2025 Ostra Group Open was a professional tennis tournament played on clay courts. It was the 22nd edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 28 April and 4 May 2025.

Singles main-draw entrants

Seeds

¹ Rankings are as of 21 April 2025.

Other entrants

The following players received wildcards into the singles main draw:

The following players received entry from the qualifying draw:

The following player received entry as a lucky loser:

Vitaliy Sachko

Champions

Singles

Zsombor Piros def. Hady Habib 6–3, 6–2.

Doubles

Jan Jermář / Stefan Latinović def. Finn Reynolds / James Watt 7–5, 6–3.