| Date: | 6–12 August |
| Edition: | 2nd (ATP) 1st (ITF) |
| Category: | ATP Challenger Tour ITF Women's Circuit |
| Location: | Jinan, China |
| Prize Money: | $150,000 (ATP) $60,000 (ITF) |
| Champms: |  Alexei Popyrin |
| Champws: |  Zhu Lin |
| Champmd: | Hsieh Cheng-peng / Yang Tsung-hua |
| Champwd: | Wang Xinyu / You Xiaodi |
| Before Name: | China International Challenger Jinan |
The 2018 Jinan International Open was a professional tennis tournament played on outdoor hard courts. It was the second (ATP) and first (ITF) editions of the tournament and was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Jinan, China, on 6–12 August 2018.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 India | Ramkumar Ramanathan | 111 | 1 | |
 Serbia | Nikola Milojević | 161 | 3 | |
 Kazakhstan | Alexander Bublik | 169 | 4 | |
 Japan | Tatsuma Ito | 182 | 5 | |
| Japan | Hiroki Moriya | 202 | 6 | |
| Serbia | Peđa Krstin | 207 | 7 | |
| Yang Tsung-hua | 211 | 8 |
The following players received wildcards into the singles main draw:
Gao Xin He Yecong Xia Zihao Zhang ZhizhenThe following players received entry from the qualifying draw:
Bai Yan Alexei Popyrin Manish Sureshkumar
Tak Khunn WangThe following player received entry as a lucky loser:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Thailand | Luksika Kumkhum | 89 | 1 | |
| China | Wang Yafan | 93 | 2 | |
| China | Duan Yingying | 111 | 3 | |
| China | Zhu Lin | 132 | 4 | |
| China | Liu Fangzhou | 137 | 5 | |
 Korea, Republic of | Jang Su-jeong | 190 | 6 | |
| India | Ankita Raina | 195 | 7 | |
| China | Lu Jingjing | 211 | 8 |
The following players received a wildcard into the singles main draw:
Yu Wenjun Zheng QinwenThe following players received entry from the qualifying draw:
See main article: 2018 Jinan International Open – Men's singles.
Alexei Popyrin def. 
James Ward 3–6, 6–1, 7–5.See main article: 2018 Jinan International Open – Women's singles.
Zhu Lin def. Wang Yafan, 6–4, 6–1See main article: 2018 Jinan International Open – Men's doubles.
Alexander Bublik / 
Alexander Pavlioutchenkov 7–6(7–5), 4–6, [10–5].See main article: 2018 Jinan International Open – Women's doubles.
Wang Xinyu / You Xiaodi def. Hsieh Shu-ying / Lu Jingjing, 6–3, 6–7(5–7), [10–2]