2023 Busan Open

The 2023 Busan Open was a professional tennis tournament played on hardcourts. It was the 20th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Busan, South Korea between 8 and 14 May 2023.

* ¹ Rankings as of 24 April 2023.

The following players received wildcards into the singles main draw:

• Chung Hyeon
• Chung Yun-seong
• Nam Ji-sung

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

• Omar Jasika
• Daniel Masur

The following players received entry from the qualifying draw:

• Jason Jung
• Yuki Mochizuki
• Hiroki Moriya
• Luke Saville
• Renta Tokuda
• Yasutaka Uchiyama

• Aleksandar Vukic def. Max Purcell 6–4, 1–0 ret.

• Evan King / Reese Stalder def. Max Purcell / Rubin Statham by walkover.