Group 3 of the 1930 FIFA World Cup began on 14 July 1930 and concluded on 21 July 1930. Uruguay won the group, and advanced to the semi-finals. Romania and Peru failed to advance.
Romania scored early on in their first match against Peru. The score stayed at 1-0 until Peru found an equalizer in the 75th minute. Romania scored 2 late goals to win the match 3-1. Peru were eliminated 1 match later by hosts Uruguay after 1 goal from Hector Castro was enough to win the match. Uruguay dominated the first half of their game against Romania, scoring 4 goals which was enough to send them through to the knockouts.
| GK | Juan Valdivieso | |||
| DF | Mario de las Casas | |||
| DF | Alberto Soria | |||
| MF | Plácido Galindo (c) | |||
| MF | Domingo García | |||
| MF | Alberto Denegri | |||
| FW | Julio Lores | |||
| FW | Alejandro Villanueva | |||
| FW | José María Lavalle | |||
| FW | Demetrio Neyra | |||
| FW | Luis de Souza | |||
| Manager: | ||||
 Francisco Bru | ||||
| Linesmen: John Langenus (Belgium) Francisco Mateucci (Uruguay) |
| Linesmen: Thomas Balvay (France) Henri Christophe (Belgium) |
| GK | Ion Lăpușneanu | |||
| DF | Rudolf Bürger | |||
| DF | Iosif Czako | |||
| MF | Alfred Eisenbeisser | |||
| MF | Emerich Vogl (c) | |||
| MF | Corneliu Robe | |||
| FW | Nicolae Kovács | |||
| FW | Adalbert Deșu | |||
| FW | Rudolf Wetzer | |||
| FW | László Raffinsky | |||
| FW | Ștefan Barbu | |||
| Manager: | ||||
| Constantin Rădulescu | ||||
| Linesmen: Alberto Warnken (Chile) Ulises Saucedo (Bolivia) |