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| Gold Coast Tier III Hard | Jan 8 2006 |
| 1 | Nakamura - Antonella Serra-Zanetti | 2-6 6-4 6-3 |
| 2 | Anabel Medina Garrigues(8) - Nakamura | 6-4 6-4 |
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| Canberra Tier IV Hard | Jan 15 2006 |
| 1 | Nakamura - Eva Hrdinova-Q | 6-2 6-2 |
| 2 | Nakamura - Roberta Vinci(5) | 7-5 6-0 |
| QF | Shahar Peer(4) - Nakamura | 2-6 6-3 6-0 |
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| Australian Open Hard | Jan 29 2006 |
| 1 | Nakamura - Alize Cornet-WC | 6-2 4-6 6-2 |
| 2 | Nakamura - Gisela Dulko(31) | 6-1 6-1 |
| 3 | Patty Schnyder(7) - Nakamura | 6-2 6-3 |
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| Pan Pacific Open Tier I Carpet | Feb 5 2006 |
| 1 | Samantha Stosur - Nakamura-WC | 6-1 6-3 |
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| Pattaya Tier IV Hard | Feb 12 2006 |
| 1 | Nakamura(7) - Kaia Kanepi | 6-78 6-3 6-3 |
| 2 | Lourdes Dominguez Lino - Nakamura(7) | 6-2 6-0 |
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| Bangalore Tier III Hard | Feb 19 2006 |
| 1 | Mariya Koryttseva - Nakamura(5) | 0-6 6-3 6-3 |
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| Indian Wells Tier I Hard | Mar 19 2006 |
| 1 | Nakamura - Brenda Schultz-McCarthy-WC | 6-4 6-2 |
| 2 | Nakamura - Mara Santangelo(25) | 6-3 7-5 |
| 3 | Justine Henin(1) - Nakamura | 6-0 6-0 |
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| Miami Tier I Hard | Apr 2 2006 |
| 1 | Anastasiya Yakimova-Q - Nakamura | 1-6 6-1 6-2 |
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| Fed Cup World Group II | Apr 23 2006 |
| | Nakamura - Timea Bacsinszky | 6-2 3-6 6-1 |
| | Nakamura - Nicole Riner | 6-1 3-6 6-2 |
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| Gifu $50,000 Carpet | May 7 2006 |
| 1 | Nakamura(1) - Kristina Czafikova | 6-2 6-0 |
| 2 | Nakamura(1) - Abigail Spears-Q | 6-2 6-2 |
| QF | Nakamura(1) - Ayumi Morita | 6-1 3-0 |
| SF | Nakamura(1) - Casey Dellacqua(4) | 6-4 6-4 |
| F | Erika Takao - Nakamura(1) | 6-1 5-7 6-1 |
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| Rome Tier I Clay | May 21 2006 |
| 1 | Nakamura - Marta Domachowska | 7-65 6-3 |
| 2 | Anna-Lena Groenefeld(11) - Nakamura | 6-4 6-3 |
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| Strasbourg Tier III Clay | May 28 2006 |
| 1 | Nakamura - Shinobu Asagoe | 6-1 7-5 |
| 2 | Anabel Medina Garrigues(4)-WC - Nakamura | 6-1 6-0 |
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| Roland Garros Clay | Jun 11 2006 |
| 1 | Catalina Castano - Nakamura | 4-6 6-3 6-1 |
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| Birmingham Tier III Grass | Jun 18 2006 |
| 1 | Emmanuelle Gagliardi-Q - Nakamura | 6-3 6-3 |
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| Eastbourne Tier II Grass | Jun 25 2006 |
| Qual 1 | Eva Birnerova - Nakamura(2) | 6-1 7-5 |
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| Wimbledon Grass | Jul 9 2006 |
| 1 | Ekaterina Bychkova - Nakamura | 6-3 1-6 6-3 |
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| Fed Cup Playoff | Jul 16 2006 |
| | Nakamura - Barbara Schwartz | 6-2 7-5 |
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| US Open Hard | Sep 10 2006 |
| 1 | Nakamura - Melinda Czink | 6-1 6-2 |
| 2 | Ana Ivanovic(16) - Nakamura | 7-5 6-3 |
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| Bali Tier III Hard | Sep 17 2006 |
| 1 | Nakamura(9) - Suchanan Viratprasert | 7-62 6-4 |
| 2 | Hana Sromova - Nakamura(9) | 6-3 7-5 |
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| Beijing Tier II Hard | Sep 24 2006 |
| Qual 1 | Alina Jidkova - Nakamura(5) | 6-3 6-4 |
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| Seoul Tier IV Hard | Oct 1 2006 |
| 1 | Nakamura - Mariana Diaz-Oliva | 7-63 6-3 |
| 2 | Akiko Morigami - Nakamura | 7-5 6-2 |
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| Japan Open Tier III Hard | Oct 8 2006 |
| 1 | Nakamura-WC - Caroline Wozniacki-WC | 6-3 6-3 |
| 2 | Nakamura-WC - Anabel Medina Garrigues(4) | 5-2 |
| QF | Nakamura-WC - Jamea Jackson | 6-1 1-6 7-64 |
| SF | Nakamura-WC - Yung Jan Chan | 7-63 2-6 6-4 |
| F | Marion Bartoli(1) - Nakamura-WC | 2-6 6-2 6-2 |
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| Bangkok Tier III Hard | Oct 15 2006 |
| 1 | Nakamura - Nudnida Luangnam-WC | 6-1 6-4 |
| 2 | Nakamura - Mariana Diaz-Oliva-Q | 6-4 6-3 |
| QF | Meghann Shaughnessy(6) - Nakamura | 6-2 6-4 |
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| Shanghai $50,000 Hard | Nov 5 2006 |
| 1 | Nakamura(1) - Jing-Jing Lu | 6-2 6-1 |
| 2 | Nakamura(1) - Shengnan Sun | 6-2 6-2 |
| QF | Akgul Amanmuradova - Nakamura(1) | 4-6 6-3 6-2 |