Natsumi Kawaguchi
- Country
- Japan
- Date of birth
- 2002-06-28
- Plays
- left-handed
- Ranking WTA
- 392 · 166 points
- Live ranking
- 408 · 150 points
- Ranking WTA (doubles)
- 249 · 330 points
- Season 2026
- 1–2; doubles 0–2
Recent matches
| Date | Tournament | Round | Opponent | Score | Result |
|---|---|---|---|---|---|
| 2026-09-26 | Jingshan | R1 | Meiqi Guo | 0-6 3-6 | lost |
| 2026-09-24 | Nanao | R16 | Sayaka Ishii | 7-5 2-6 | lost |
| 2026-09-22 | Nanao | R32 | Kayo Nishimura | 6-3 6-2 | won |
| 2026-05-05 | Jiujiang | R1 | Gabriella da Silva Fick / Tenika Mcgiffin (with Hiroko Kuwata) | 6-7(5) 4-6 | lost |
| 2026-02-23 | Austin | R1 | Emily Appleton / Alexa Guarachi (with Ya Hsin Lee) | 4-6 4-6 | lost |
| 2025-10-16 | Osaka | QF | Storm Hunter / Desirae Krawczyk (with Sara Saito) | 6-3 2-6 0-1(8) | lost |
| 2025-10-14 | Osaka | R1 | Hayu Kinoshita / Wakana Sonobe (with Sara Saito) | 6-1 6-4 | won |