2018 Busan Open

The 2018 Busan Open was a professional tennis tournament played on hard courts. It was the seventeenth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Busan, South Korea between 14 and 20 May 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇰🇷 Hong Seong-chan
 * 🇰🇷 Kim Young-seok
 * 🇰🇷 Na Jung-woong
 * 🇰🇷 Oh Chan-yeong

The following player received entry into the singles main draw as a special exempt:
 * 🇯🇵 Yoshihito Nishioka

The following players received entry from the qualifying draw:
 * 🇦🇺 Maverick Banes
 * 🇰🇷 Chung Yun-seong
 * 🇳🇿 Rubin Statham
 * 🇯🇵 Yosuke Watanuki

Singles

 * 🇦🇺 Matthew Ebden def. 🇨🇦 Vasek Pospisil 7–6(7–4), 6–1.

Doubles

 * Hsieh Cheng-peng / Christopher Rungkat def.  Ruan Roelofse / 🇦🇺 John-Patrick Smith 6–4, 6–3.