# 2006 AIG Japan Open Tennis Championships – Women's singles

Nicole Vaidišová was the defending champion, but did not compete this year.
First-seeded Marion Bartoli won the title by defeating Aiko Nakamura 2–6, 6–2, 6–2 in the final.

## Seeds

* Marion Bartoli (champion)
* Ai Sugiyama (quarterfinals)
* Maria Kirilenko (first round)
* Anabel Medina Garrigues (second round, retired due to a left hamstring strain)
* Sofia Arvidsson (first round)
* Gisela Dulko (first round)
* Lucie Šafářová (first round)
* Meghann Shaughnessy (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Marion Bartoli | 6 | 6 | | | | | | |
| Q | Camille Pin | 0 | 1 | | | | | | |
| Q | Camille Pin | 0 | 1 | | 1 | Marion Bartoli | 2 | 6 | 6 |
| | | | | | WC | Aiko Nakamura | 6 | 2 | 2 |
| WC | Aiko Nakamura | 7$^7$ | 2 | 6 | WC | Aiko Nakamura | 6 | 2 | 2 |
| | Chan Yung-jan | 6$^3$ | 6 | 4 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Bartoli | 6 | 3 | 6 | | | | | | | | | | | | | | |
| | J Craybas | 2 | 6 | 4 | 1 | M Bartoli | 6 | 6 | | | | | | | | | | |
| | V Dushevina | 7$^7$ | 6 | | | V Dushevina | 2 | 4 | | | | | | | | | | |
| Q | S Uberoi | 6$^3$ | 3 | | | | | | | 1 | M Bartoli | 6 | 6 | | | | | |
| | C Castaño | 2 | 6 | 4 | | | | | | Q | J Namigata | 2 | 1 | | | | | |
| Q | J Namigata | 6 | 1 | 6 | Q | J Namigata | 2 | | | | | | | | | | | |
| | P Suárez | 6 | 6 | | | P Suárez | 4$^r$ | | | | | | | | | | | |
| 7 | L Šafářová | 4 | 4 | | | | | | | | | | | | 1 | M Bartoli | 6 | 6 |
| 3 | M Kirilenko | 6 | 2 | 6$^3$ | | | | | | | | | | | Q | C Pin | 0 | 1 |
| WC | A Morigami | 1 | 6 | 7$^7$ | WC | A Morigami | 6 | 5 | 3 | | | | | | | | | |
| LL | Y Fedossova | 6 | 6 | | LL | Y Fedossova | 4 | 7 | 6 | | | | | | | | | |
| | V Ruano Pascual | 1 | 2 | | | | | | | LL | Y Fedossova | 7 | 4 | 1 | | | | |
| | E Daniilidou | 1 | 1$^r$ | | | | | | | Q | C Pin | 5 | 6 | 6 | | | | |
| Q | C Pin | 6 | 1 | | Q | C Pin | 6 | 3 | 6 | | | | | | | | | |
| Q | L Osterloh | 6 | 3 | 6 | Q | L Osterloh | 4 | 6 | 0 | | | | | | | | | |
| 8 | M Shaughnessy | 2 | 6 | 3 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | G Dulko | 4 | 1 | | | | | | | | | | | | | | | |
| | J Jackson | 6 | 6 | | J Jackson | 6 | 6 | | | | | | | | | | | |
| | A Molik | 7 | 6 | | A Molik | 3 | 1 | | | | | | | | | | | |
| | J Kostanić | 5 | 3 | | | | | | | J Jackson | 1 | 6 | 6$^4$ | | | | | |
| WC | A Nakamura | 6 | 6 | | | | | | WC | A Nakamura | 6 | 1 | 7$^7$ | | | | | |
| WC | C Wozniacki | 3 | 3 | WC | A Nakamura | 5 | | | | | | | | | | | | |
| | K Zakopalová | 6$^3$ | 5 | 4 | A Medina Garrigues | 2$^r$ | | | | | | | | | | | | |
| 4 | A Medina Garrigues | 7$^7$ | 7 | | | | | | | | | | | WC | A Nakamura | 7$^7$ | 2 | 6 |
| 5 | S Arvidsson | 6$^4$ | 6$^1$ | | | | | | | | | | | | Y-j Chan | 6$^3$ | 6 | 4 |
| | M Domachowska | 7$^7$ | 7$^7$ | | M Domachowska | 1 | 0 | | | | | | | | | | | |
| | J Schruff | 3 | 0 | | Y-j Chan | 6 | 6 | | | | | | | | | | | |
| | Y-j Chan | 6 | 6 | | | | | | | Y-j Chan | 6 | 6 | | | | | | |
| | S Brémond | 4 | 3 | | | | | | 2 | A Sugiyama | 3 | 4 | | | | | | |
| | V King | 6 | 6 | | V King | 4 | 7 | 5 | | | | | | | | | | |
| | E Laine | 4 | 3 | 2 | A Sugiyama | 6 | 5 | 7 | | | | | | | | | | |
| 2 | A Sugiyama | 6 | 6 | | | | | | | | | | | | | | | |