| Date: | 10–15 October (men) 16–22 October (women) |
| Edition: | 5th (women) 4th (men) |
| Category: | ATP Challenger Tour ITF Women's Circuit |
| Surface: | Hard |
| Location: | Shenzhen, China |
| Champms: |  Aleksandar Kovacevic |
| Champmd: |  Alexander Erler / Lucas Miedler |
| Champws: |  Bai Zhuoxuan |
| Champwd: |  Kristina Mladenovic /  Moyuka Uchijima |
| Before Year: | 2019 |
The 2023 Shenzhen Longhua Open was a professional tennis tournament played on hard courts. It was the fourth (men) and fifth (women) editions of the tournament which was part of the 2023 ATP Challenger Tour and the 2023 ITF Women's World Tennis Tour. It took place in Shenzhen, China between 10 and 22 October 2023.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Australia | Thanasi Kokkinakis | 69 | 1 | |
 Argentina | Pedro Cachin | 71 | 2 | |
| Nuno Borges | 85 | 3 | ||
 Italy | Fabio Fognini | 128 | 4 | |
| Australia | James Duckworth | 139 | 5 | |
| United States | Aleksandar Kovacevic | 146 | 6 | |
| France | Térence Atmane | 148 | 7 | |
| Hsu Yu-hsiou | 184 | 8 |
The following players received wildcards into the singles main draw:
Fabio Fognini Sun Qian Tang ShengThe following players received entry from the qualifying draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| China | Bai Zhuoxuan | 117 | 1 | |
| China | Yuan Yue | 128 | 2 | |
 Hungary | Tímea Babos | 181 | 3 | |
| Japan | Moyuka Uchijima | 182 | 4 | |
| France | Kristina Mladenovic | 214 | 5 | |
 Canada | Carol Zhao | 230 | 6 | |
 Hong Kong | Eudice Chong | 242 | 7 | |
 Thailand | Lanlana Tararudee | 252 | 8 |
The following players received wildcards into the singles main draw:
Mi Tianmi Tang Qianhui Wang Meiling Zhang YingThe following players received entry from the qualifying draw:
Guo Meiqi Ren Yufei
Clara Vlasselaer Wu Ho-ching Yang YidiSee main article: 2023 Shenzhen Longhua Open – Men's singles.
Aleksandar Kovacevic def. Nuno Borges 7–6(7–4), 7–6(7–5).See main article: 2023 Shenzhen Longhua Open – Women's singles.
Bai Zhuoxuan def. Yuan Yue 7–6(7–5), 6–2.See main article: 2023 Shenzhen Longhua Open – Men's doubles.
Alexander Erler / Lucas Miedler def. 
Piotr Matuszewski / Matthew Romios 6–3, 6–4.See main article: 2023 Shenzhen Longhua Open – Women's doubles.
Kristina Mladenovic / Moyuka Uchijima def. Tímea Babos / 
Kateryna Volodko, 6–2, 7–5