# 2012 Open GDF Suez Nantes Atlantique – Singles

Alison Riske was the defending champion but lost to Yulia Putintseva in the second round.
Monica Niculescu won the title, defeating Putintseva in the final, 6–2, 6–3.

## Seeds

* Petra Cetkovská (second round)
* Monica Niculescu (champion)
* Alexandra Cadanțu (first round)
* Stéphanie Foretz Gacon (first round)
* Garbiñe Muguruza (first round)
* Kristýna Plíšková (first round)
* Karolína Plíšková (quarterfinals)
* Yvonne Meusburger (first round)

## Main 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 |
| | Claire Feuerstein | 3 | 6 | 6$^2$ | | | | |
| | Yulia Putintseva | 6 | 3 | 7$^7$ | | | | |
| | Yulia Putintseva | 6 | 3 | 7$^7$ | | Yulia Putintseva | 2 | 3 |
| | | | | | 2 | Monica Niculescu | 6 | 6 |
| | Virginie Razzano | 6 | 3 | 2 | 2 | Monica Niculescu | 6 | 6 |
| 2 | Monica Niculescu | 3 | 6 | 6 | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | P Cetkovská | 6 | 6 | | | | | | | | | | | | | |
| WC | I Brémond | 3 | 4 | | 1 | P Cetkovská | 1 | 7$^7$ | 1 | | | | | | | |
| LL | M Georges | 4 | 4 | | | T Malek | 6 | 6$^5$ | 6 | | | | | | | |
| | T Malek | 6 | 6 | | | | | | | T Malek | 6$^4$ | 4 | | | | |
| JE | A-S Mestach | 6 | 4 | 6 | | | | | | C Feuerstein | 7$^7$ | 6 | | | | |
| | I Pavlovic | 3 | 6 | 1 | JE | A-S Mestach | 6 | 6$^7$ | 6$^4$ | | | | | | | |
| | C Feuerstein | 6 | 6 | | | C Feuerstein | 3 | 7$^9$ | 7$^7$ | | | | | | | |
| 8 | Y Meusburger | 4 | 2 | | | | | | | | | | C Feuerstein | 3 | 6 | 6$^2$ |
| 3 | A Cadanțu | 7$^7$ | 3 | 2 | | | | | | | | | Y Putintseva | 6 | 3 | 7 |
| | Y Putintseva | 6$^4$ | 6 | 6 | | Y Putintseva | 7$^8$ | 7$^7$ | | | | | | | | |
| | A Riske | 6 | 6 | | | A Riske | 6$^6$ | 6$^5$ | | | | | | | | |
| | A Rezaï | 3 | 4 | | | | | | | Y Putintseva | 7 | 6 | | | | |
| | V Savinykh | 6 | 6 | | | | | | | P Ormaechea | 5 | 3 | | | | |
| PR | R Voráčová | 1 | 3 | | | V Savinykh | 3 | 3 | | | | | | | | |
| | P Ormaechea | 6 | 0 | 6 | | P Ormaechea | 6 | 6 | | | | | | | | |
| 5 | G Muguruza | 3 | 6 | 2 | | | | | | | | | | | | |

### Bottom 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | Kr Plíšková | 6 | 6$^4$ | 5 | | | | | | | | | | | | | | |
| | K Kozlova | 2 | 7$^7$ | 7 | | K Kozlova | 3 | 4 | | | | | | | | | | |
| | V Razzano | 6 | 6 | | | V Razzano | 6 | 6 | | | | | | | | | | |
| Q | O Jabeur | 3 | 3 | | | | | | | | V Razzano | 6 | 6 | | | | | |
| | E Svitolina | 4 | 6 | 6 | | | | | | Q | O Savchuk | 2 | 3 | | | | | |
| WC | S Beltrame | 6 | 3 | 4 | | E Svitolina | 4 | 6 | 5 | | | | | | | | | |
| Q | O Savchuk | 6 | 6 | | Q | O Savchuk | 6 | 2 | 7 | | | | | | | | | |
| 4 | S Foretz Gacon | 1 | 4 | | | | | | | | | | | | V Razzano | 6 | 3 | 2 |
| 7 | Ka Plíšková | 6 | 3 | 7 | | | | | | | | | | 2 | M Niculescu | 3 | 6 | 6 |
| | S Zhang | 4 | 6 | 5 | 7 | Ka Plíšková | 6 | 6 | | | | | | | | | | |
| Q | M Linette | 6 | 6$^3$ | 6 | Q | M Linette | 1 | 2 | | | | | | | | | | |
| | M Puig | 4 | 7$^7$ | 4 | | | | | | 7 | Ka Plíšková | 3 | 1 | | | | | |
| | N Burnett | 4 | 7 | 2 | | | | | | 2 | M Niculescu | 6 | 6 | | | | | |
| Q | M Jugić-Salkić | 6 | 5 | 6 | Q | M Jugić-Salkić | 1 | 0 | | | | | | | | | | |
| WC | J Coin | 3 | 1 | | 2 | M Niculescu | 6 | 6 | | | | | | | | | | |
| 2 | M Niculescu | 6 | 6 | | | | | | | | | | | | | | | |