The 2017 International Challenger Zhangjiagang was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Zhangjiagang, China between 5 and 10 September 2017.
Singles main-draw entrants
Seeds
1 Rankings are as of 28 August 2017.
Other entrants
The following players received wildcards into the singles main draw: Gao Xin Sun Fajing Wang Chuhan Zhang Zhizhen
The following player received entry into the singles main draw as an alternate: Henri Laaksonen
The following players received entry from the qualifying draw: Yuya Kibi Marinko Matosevic Bradley Mousley Miliaan Niesten
Champions
Singles
Jason Jung def. Zhang Ze 6–4, 2–6, 6–4.
Doubles
Gao Xin / Zhang Zhizhen def. Chen Ti / Yi Chu-huan 6–2, 6–3.