| Date | 6 August 2016 |
|---|---|
| Status | Olympic |
| Location | Arena Carioca 2, Parque Olímpico da Barra, Barra da Tijuca, Rio de Janeiro |
| Participants | 23 from 23 countries |
Heavy favorite in the 48 kg class was the 2012 gold medal winner, Sarah Menezes from Brazil, particularly being in front of her home crowd. However, in the final contest of Pool B, she was defeated by Cuba’s 2015 Pan American Games gold medalist Dayaris Mestre by Shido (penalty). Later in the repêchage she lost again, this time to Mongolian Mönkhbatyn Urantsetseg, who applied an irresistible armbar, resulting in an Ippon (full point). In her next fight, for the bronze medal Urantsetseg had to surrender to Japan’s second-seeded Ami Kondo. In the other bronze medal bout Otgontsetseg Galbadrakhyn from Kazakhstan toppled Mestre with a back-throw.
The two finalists were third-ranked Paula Pareto, the 2008 bronze medalist from Argentina, and Korea’s Jeong Bok-Yeong, bronze medalist at the 2015 World Championships. Jeong sailed through to the final winning every encounter by an Ippon, while Pareto had to go the full distance in most fights winning by Waza-ari (half point). In the final, she also scored a Waza-ari with a Kouchi-gari (small inner reap) after less than two minutes. Although she received two penalties in the last minute, this was enough for medical doctor Pareto to win the first Olympic gold medal for Argentina in any sport by a woman.
| Date | 6 August 2016 — 10:00 |
|---|---|
| Format | Winners advance to round two. |
| Match | Date/Time | Location | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|---|
| Match #1 | 06 Aug | Mat 1 | Mönkhbatyn Urantsetseg | MGL | bye | |||
| Match #2 | 06 Aug 10:00 | Mat 1 | Laëtitia Payet | FRA | Ippon | Chloe Rayner | AUS | |
| Match #3 | 06 Aug | Jeong Bo-Gyeong | KOR | bye | ||||
| Match #4 | 06 Aug | Mat 1 | Văn Ngọc Tú | VIE | Penalty | Valentina Moscatt | ITA | |
| Match #5 | 06 Aug | Sarah Menezes | BRA | bye | ||||
| Match #6 | 06 Aug | Mat 1 | Charline Van Snick | BEL | Ippon | Monica Ungureanu | ROU | |
| Match #7 | 06 Aug | Julia Figueroa | ESP | bye | ||||
| Match #8 | 06 Aug | Mat 1 | Dayaris Mestre | CUB | Penalty | Asaramanitra Ratiarison | MAD | |
| Match #9 | 06 Aug | Paula Pareto | ARG | bye | ||||
| Match #10 | 06 Aug | Mat 2 | Irina Dolgova | RUS | Waza-ari | Kim Sol-Mi | PRK | |
| Match #11 | 06 Aug | Éva Csernoviczki | HUN | bye | ||||
| Match #12 | 06 Aug | Mat 2 | Maryna Cherniak | UKR | Ippon | Shira Rishony | ISR | |
| Match #13 | 06 Aug | Ami Kondo | JPN | bye | ||||
| Match #14 | 06 Aug | Mat 2 | Edna Carrillo | MEX | Ippon | Dilara Lokmanhekim | TUR | |
| Match #15 | 06 Aug | Otgontsetseg Galbadrakhyn | KAZ | bye | ||||
| Match #16 | 06 Aug | Taciana César | GBS | bye |
| Date | 6 August 2016 |
|---|---|
| Format | Winners advance to quarter-finals. |
| Match | Date/Time | Location | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|---|
| Match #1 | 06 Aug | Mat 1 | Mönkhbatyn Urantsetseg | MGL | Ippon | Laëtitia Payet | FRA | |
| Match #2 | 06 Aug | Mat 1 | Jeong Bo-Gyeong | KOR | Ippon | Văn Ngọc Tú | VIE | |
| Match #3 | 06 Aug | Mat 1 | Sarah Menezes | BRA | Yuko | Charline Van Snick | BEL | |
| Match #4 | 06 Aug | Mat 1 | Dayaris Mestre | CUB | Waza-ari | Julia Figueroa | ESP | |
| Match #5 | 06 Aug | Mat 2 | Paula Pareto | ARG | Ippon | Irina Dolgova | RUS | |
| Match #6 | 06 Aug | Mat 2 | Éva Csernoviczki | HUN | Yuko | Maryna Cherniak | UKR | |
| Match #7 | 06 Aug | Mat 2 | Ami Kondo | JPN | Ippon | Edna Carrillo | MEX | |
| Match #8 | 06 Aug | Mat 2 | Otgontsetseg Galbadrakhyn | KAZ | Waza-ari | Taciana César | GBS |
| Date | 6 August 2016 |
|---|---|
| Format | Winners advance to semi-finals. Losers advance to repêchage for bronze medal tournament. |
| Match | Date/Time | Location | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|---|
| Match #1 | 06 Aug | Mat 1 | Jeong Bo-Gyeong | KOR | Ippon | Mönkhbatyn Urantsetseg | MGL | |
| Match #2 | 06 Aug | Mat 1 | Dayaris Mestre | CUB | Penalty | Sarah Menezes | BRA | |
| Match #3 | 06 Aug | Mat 2 | Paula Pareto | ARG | Waza-ari | Éva Csernoviczki | HUN | |
| Match #4 | 06 Aug | Mat 2 | Ami Kondo | JPN | Ippon | Otgontsetseg Galbadrakhyn | KAZ |
| Date | 6 August 2016 |
|---|---|
| Format | Winners advance to bronze medal matches. |
| Match | Date/Time | Location | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|---|
| Match #1 | 06 Aug | Mat 1 | Mönkhbatyn Urantsetseg | MGL | Ippon | Sarah Menezes | BRA | |
| Match #2 | 06 Aug | Mat 1 | Otgontsetseg Galbadrakhyn | KAZ | Ippon | Éva Csernoviczki | HUN |
| Date | 6 August 2016 |
|---|---|
| Format | Winners advance to gold medal final. Losers advance to bronze medal matches. |
| Match | Date/Time | Location | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|---|
| Match #1 | 06 Aug | Mat 1 | Jeong Bo-Gyeong | KOR | Ippon | Dayaris Mestre | CUB | |
| Match #2 | 06 Aug | Mat 1 | Paula Pareto | ARG | Waza-ari | Ami Kondo | JPN |
| Date | 6 August 2016 |
|---|
| Match | Date/Time | Location | Competitor | NOC | Result | Competitor | NOC | |
|---|---|---|---|---|---|---|---|---|
| Match #3/5 | 06 Aug | Mat 1 | Ami Kondo | JPN | Yuko | Mönkhbatyn Urantsetseg | MGL | |
| Match #3/5 | 06 Aug | Mat 1 | Otgontsetseg Galbadrakhyn | KAZ | Ippon | Dayaris Mestre | CUB | |
| Match #1/2 | 06 Aug | Mat 1 | Paula Pareto | ARG | Waza-ari | Jeong Bo-Gyeong | KOR |