| Event: | Women's 48 kg |
| Games: | 2008 Summer |
| Venue: | Beijing National Stadium |
| Dates: | 9 August |
| Win Value: | 1100 |
| Win Label: | Winning score |
| Gold: | Alina Dumitru |
| Goldnoc: | ROU |
| Silver: | Yanet Bermoy |
| Silvernoc: | CUB |
| Bronze: | Paula Pareto |
| Bronzenoc: | ARG |
| Bronze2: | Ryoko Tani |
| Bronzenoc2: | JPN |
| Prev: | 2004 |
| Next: | 2012 |
The women's 48 kg judo competition at the 2008 Summer Olympics was held on August 9 at the Beijing Science and Technology University Gymnasium. Preliminary rounds started at 12:00 pm CST. Repechage finals, semifinals, bouts for bronze medals, and the final were held at 6:00 pm CST.
This event was the lightest of the women's judo weight classes, limiting competitors to a maximum of 48 kilograms of body mass. Like all other judo events, bouts lasted five minutes. If the bout was still tied at the end, it was extended for another five-minute, sudden-death period; if neither judoka scored during that period, the match is decided by the judges. The tournament bracket consisted of a single-elimination contest culminating in a gold medal match. There was also a repechage to determine the winners of the two bronze medals. Each judoka who had lost to a semifinalist competed in the repechage. The two judokas who lost in the semifinals faced the winner of the opposite half of the bracket's repechage in bronze medal bouts.
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Those judoka eliminated in earlier rounds by the four semifinalists of the main bracket advanced to the repechage. These matches determined the two bronze medalists for the event.