| Challenger Las Vegas | 09/10 21:00 | 25 | Marek Gengel vs Naoki Nakagawa | View |
| ITF M25 Sapporo | 09/08 02:00 | 29 | Kokoro Isomura v Naoki Nakagawa | 6-3,6-2 | |
| ITF M25 Sapporo | 09/07 02:30 | 28 | Naoki Nakagawa v Daisuke Sumizawa | 6-3,6-4 | |
| ITF M25 Sapporo | 09/06 03:50 | 27 | [500] Hikaru Shiraishi v Naoki Nakagawa [446] | 7-6,6-7,1-6 | |
| ITF M25 Sapporo | 09/05 05:30 | 26 | Ryotaro Matsumura v Naoki Nakagawa | 7-5,2-6,3-6 | |
| ITF M25 Sapporo | 09/03 00:45 | 25 | Hayato Matsuoka v Naoki Nakagawa | 2-6,4-6 | |
| Challenger Santo Domingo | 08/12 16:05 | 19 | [457] Naoki Nakagawa v Christian Langmo [460] | 6-7,4-6 | |
| Challenger Santo Domingo | 08/11 19:10 | 14 | Naoki Nakagawa v Enmanuel Munoz | 6-2,6-2 | |
| Challenger Lincoln | 08/05 16:00 | 19 | Naoki Nakagawa v Jack Pinnington Jones | 2-6,6-1,1-6 | |
| Challenger Lincoln | 08/04 15:00 | 14 | [423] Naoki Nakagawa v Niki Kaliyanda Poonacha [109] | 6-3,6-2 | |
| Challenger Lexington | 07/29 14:35 | 14 | Naoki Nakagawa v Joshua Lapadat | 3-6,6-2,4-6 | |
| Challenger Chicago | 07/22 16:00 | 19 | Naoki Nakagawa v Michael Zheng | 5-7,4-6 | |
| Challenger Chicago | 07/21 16:55 | 14 | [249] Clement Chidekh v Naoki Nakagawa [411] | 3-6,2-6 |
Naoki Nakagawa (中川直樹, Nakagawa Naoki, born 19 November 1996) is a Japanese tennis player.
Nakagawa has a career high ATP singles ranking of world No, 531 achieved on 24 July 2017. He also has a career high ATP doubles ranking of world No. 726 achieved on 30. July 2018.
As a junior, Nakagawa reached his highest ranking of number 9 in the world in the combined singles and doubles ITF junior ranking system. His junior tenure was highlighted and capped off by winning the boys' doubles title at the 2014 US Open where he alongside Australia's Omar Jasika defeated the Brazilian duo or João Menezes and Rafael Matos in straight sets 6–3, 7–6(8–6).
Nakagawa has reached 10 singles finals, with a record of 3 wins and 7 losses. Additionally, he has reached 6 doubles finals with a record of 2 wins and 4 losses. All 16 combined final appearances he has made come at the ITF Futures level.