# Judo at the 2012 Summer Olympics – Women's 78 kg

The women's 78 kg category in judo at the 2012 Olympic Games in London took place between 28 July and 2 August at the ExCeL Exhibition Centre.
The gold and silver medals were determined by a single-elimination tournament, with the winner of the final taking gold and the loser receiving silver. Judo events awarded two bronze medals. Quarter-final losers competed in a repechage match for the right to face a semi-final loser for a bronze medal (that is, the judokas defeated in quarter-finals 'A' and 'B' competed against each other, with the winner of that match facing the semi-final loser from the other half of the bracket).
Kayla Harrison, representing the United States, won the gold medal, defeating Great Britain's Gemma Gibbons in the final; Gibbons was awarded the silver medal.

## Results

The event took place on 2 August 2012, with the following results:

### Finals

| Semi-finals | Semi-finals | Final | Final |
| Mayra Aguiar (BRA) | 0000 |
| Kayla Harrison (USA) | 1010 | | |
| Kayla Harrison (USA) | 1010 | Kayla Harrison (USA) | 0020 |
| | | Gemma Gibbons (GBR) | 0000 |
| Gemma Gibbons (GBR) | 1000 | Gemma Gibbons (GBR) | 0000 |
| Audrey Tcheuméo (FRA) | 0000 | | |

### Repechages

| Repechage | Repechage | Repechage | Bronze medal | Bronze medal | Bronze medal |
| Daria Pogorzelec (POL) | Daria Pogorzelec (POL) | 0022 | | | |
| Abigél Joó (HUN) | Abigél Joó (HUN) | 1012 | Abigél Joó (HUN) | Abigél Joó (HUN) | 0001 |
| | | | Audrey Tcheuméo (FRA) | Audrey Tcheuméo (FRA) | 1000 |
| Repechage | Repechage | Repechage | Bronze medal | Bronze medal | Bronze medal |
| Marhinde Verkerk (NED) | Marhinde Verkerk (NED) | 0000 | | | |
| Yang Xiuli (CHN) | Yang Xiuli (CHN) | 0000 | Marhinde Verkerk (NED) | Marhinde Verkerk (NED) | 0000 |
| | | | Mayra Aguiar (BRA) | Mayra Aguiar (BRA) | 1000 |

### Pool A

| First round | First round | First round | Second round | Second round | Second round | Quarter-finals | Quarter-finals | Quarter-finals |
| | | | M Aguiar (BRA) | M Aguiar (BRA) | 0200 | | | |
| | | | H Mareghni (TUN) | H Mareghni (TUN) | 0003 | | | |
| | | | | | | M Aguiar (BRA) | M Aguiar (BRA) | 0200 |
| | | | | | | D Pogorzelec (POL) | D Pogorzelec (POL) | 0000 |
| | | | H Wollert (GER) | H Wollert (GER) | 0000 | | | |
| A Velenšek (SLO) | A Velenšek (SLO) | 0000 | D Pogorzelec (POL) | D Pogorzelec (POL) | 0200 | | | |
| D Pogorzelec (POL) | D Pogorzelec (POL) | 0010 | | | | | | |

### Pool B

| First round | First round | First round | Second round | Second round | Second round | Quarter-finals | Quarter-finals | Quarter-finals |
| | | | K Harrison (USA) | K Harrison (USA) | 1000 | | | |
| | | | V Moskalyuk (RUS) | V Moskalyuk (RUS) | 0000 | | | |
| | | | | | | K Harrison (USA) | K Harrison (USA) | 1010 |
| | | | | | | A Joó (HUN) | A Joó (HUN) | 0100 |
| | | | A Joó (HUN) | A Joó (HUN) | 1000 | | | |
| O Ntahonvukiye (BDI) | O Ntahonvukiye (BDI) | 0000 | A Koumba (GAB) | A Koumba (GAB) | 0000 | | | |
| A Koumba (GAB) | A Koumba (GAB) | 0200 | | | | | | |

### Pool C

| First round | First round | First round | Second round | Second round | Second round | Quarter-finals | Quarter-finals | Quarter-finals |
| A Ogata (JPN) | A Ogata (JPN) | 0010 | | | | | | |
| G-M Jeong (KOR) | G-M Jeong (KOR) | 0002 | A Ogata (JPN) | A Ogata (JPN) | 0020 | | | |
| | | | M Verkerk (NED) | M Verkerk (NED) | 0110 | | | |
| | | | | | | M Verkerk (NED) | M Verkerk (NED) | 0000 |
| | | | | | | G Gibbons (GBR) | G Gibbons (GBR) | 0100 |
| | | | P Lkhamdegd (MGL) | P Lkhamdegd (MGL) | 0010 | | | |
| G Gibbons (GBR) | G Gibbons (GBR) | 1000 | G Gibbons (GBR) | G Gibbons (GBR) | 0021 | | | |
| Y Ramirez (POR) | Y Ramirez (POR) | 0000 | | | | | | |

### Pool D

| First round | First round | First round | Second round | Second round | Second round | Quarter-finals | Quarter-finals | Quarter-finals |
| A Tcheuméo (FRA) | A Tcheuméo (FRA) | 0010 | | | | | | |
| A Cotton (CAN) | A Cotton (CAN) | 0001 | A Tcheuméo (FRA) | A Tcheuméo (FRA) | 1000 | | | |
| | | | M Pryshchepa (UKR) | M Pryshchepa (UKR) | 0000 | | | |
| | | | | | | A Tcheuméo (FRA) | A Tcheuméo (FRA) | 0101 |
| | | | | | | X Yang (CHN) | X Yang (CHN) | 0001 |
| | | | X Yang (CHN) | X Yang (CHN) | 1000 | | | |
| | | | AA Aung (MYA) | AA Aung (MYA) | 0000 | | | |