2023 Iași Open

The 2023 Iași Open was a professional tennis tournament played on outdoor clay courts. It was the fourth edition of the men's tournament which is part of the 2023 ATP Challenger Tour and second edition of the women's tournament which is part of 2023 WTA 125 tournaments. It took place in Iași, Romania between 10 and 16 July 2023 for the men and between 17 and 23 July for the women.

Men's singles main-draw entrants

¹ Rankings as of 3 July 2023.

The following players received wildcards into the singles main draw:~~Cezar Crețu~~

The following player received entry into the singles main draw using a protected ranking:

The following players received entry into the singles main draw as alternates:

The following players received entry from the qualifying draw:

The following player received entry as a lucky loser:

¹ Rankings as of 3 July 2023.

The following players received wildcards into the singles main draw:

The following players received entry from the qualifying draw:

The following players received entry as lucky losers:

† Rankings are as of 3 July 2023

The following pair received a wildcard entry into main draw:

Hugo Gaston def. Bernabé Zapata Miralles 3–6, 6–0, 6–4.

Ana Bogdan def. Irina-Camelia Begu, 6–2, 6–3

Nicolás Barrientos / Aisam-ul-Haq Qureshi def. Gabi Adrian Boitan / Bogdan Pavel 6–3, 6–3.

Veronika Erjavec / Dalila Jakupović def. Irina Bara / Monica Niculescu 6–4, 6–4