2023 Transylvania Open

The 2023 Transylvania Open was a women's tennis tournament played on indoor hard courts. It was the third edition of the Transylvania Open, and part of the WTA 250 series of the 2023 WTA Tour. It was held at the BT Arena in Cluj-Napoca, Romania, from 16 until 22 October 2023.

Singles

 * 🇩🇪 Tamara Korpatsch def. 🇷🇴 Elena-Gabriela Ruse 6–3, 6–4

Doubles

 * 🇬🇧 Jodie Burrage / Jil Teichmann def. 🇫🇷 Léolia Jeanjean / 🇺🇦 Valeriya Strakhova 6–1, 6–4

Seeds

 * Rankings are as of 9 October 2023.

Other entrants
The following players received wildcards into the main draw:
 * 🇨🇿 Nikola Bartůňková
 * 🇷🇴 Miriam Bulgaru
 * 🇷🇴 Elena-Gabriela Ruse

The following player received entry using a protected ranking:
 * 🇷🇴 Patricia Maria Țig

The following players received entry from the qualifying draw:
 * 🇷🇴 Ilona Georgiana Ghioroaie
 * Ekaterina Makarova
 * Martha Matoula
 * 🇺🇦 Anastasiya Soboleva

The following player received entry as a lucky loser:
 * 🇹🇷 İpek Öz

Withdrawals

 * 🇫🇷 Caroline Garcia → replaced by Jil Teichmann
 * 🇺🇦 Anhelina Kalinina → replaced by 🇫🇷 Léolia Jeanjean
 * Anastasia Pavlyuchenkova → replaced by 🇮🇳 Ankita Raina
 * 🇨🇿 Karolína Plíšková → replaced by 🇹🇷 İpek Öz
 * Clara Tauson → replaced by 🇺🇦 Daria Snigur
 * Donna Vekić → replaced by 🇫🇷 Jessika Ponchet

Seeds

 * Rankings are as of 9 October 2023.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇷🇴 Ilinca Amariei / 🇷🇴 Briana Szabó
 * 🇷🇴 Mara Gae / 🇧🇬 Viktoriya Tomova

The following pair received entry as alternates:
 * 🇷🇴 Ilona Georgiana Ghioroaie / 🇷🇴 Patricia Maria Țig

Withdrawals

 * 🇺🇸 Quinn Gleason / 🇺🇦 Dayana Yastremska → replaced by 🇷🇴 Ilona Georgiana Ghioroaie / 🇷🇴 Patricia Maria Țig