The Ostrava Open is a tennis tournament for female professional players. It is a WTA 250-level event held in February and played in the Ostravar Aréna and at the Ridera Sports Complex in Ostrava on indoor hardcourts. It was first organized in 2020 as a WTA 500 event after a 20 year absence to make up for the many tournaments cancelled during the 2020 season, due to the ongoing COVID-19 pandemic.
The WTA 500 event was held until 2022, with the WTA announcing in June 2023 that the event would not return. In 2026, the tournament returned to the WTA calendar, staging a WTA 250-level in February.