2019 Bucharest Open – Singles

Anastasija Sevastova was the defending champion, but lost in the second round to Patricia Maria Țig.

Elena Rybakina won her first WTA Tour title, defeating Țig in the final, 6–2, 6–0.

Seeds
• # Anastasija Sevastova (second round)

• # 🇸🇰 Viktória Kužmová (quarterfinals)

• # 🇷🇺 Veronika Kudermetova (second round, retired)

• # Tamara Zidanšek (withdrew)

• # 🇷🇴 Sorana Cîrstea (first round)

• # 🇩🇪 Laura Siegemund (semifinals)

• # 🇪🇸 Aliona Bolsova (second round, retired)

• # 🇨🇿 Kristýna Plíšková (quarterfinals)

Seeds
• # 🇨🇿 Tereza Martincová (first round, retired)

• # Ekaterine Gorgodze (first round)

• # 🇭🇺 Anna Bondár (qualifying competition, lucky loser)

• # Tereza Mrdeža (qualifying competition, lucky loser)

• # 🇩🇪 Anna Zaja (first round, retired)

• # 🇷🇴 Alexandra Cadanțu (qualifying competition, lucky loser)

• # 🇮🇹 Martina Di Giuseppe (qualified)

• # 🇹🇷 Başak Eraydın (second round)

Qualifiers
• # 🇷🇴 Patricia Maria Țig

• # 🇨🇳 Xu Shilin

• # 🇮🇹 Martina Di Giuseppe

• # 🇦🇺 Jaimee Fourlis

Lucky losers
• # 🇭🇺 Anna Bondár

• # Tereza Mrdeža

• # 🇷🇴 Alexandra Cadanțu

• # 🇧🇬 Isabella Shinikova