Athletics at the 2012 Summer Olympics – Women's 4 × 100 metres relay
The women's 4 × 100 metres relay competition at the 2012 Olympic Games in London took place on 9–10 August at the Olympic Stadium. The victorious United States team broke the world record by over half a second. The previous record had been set 27 years previously by East Germany. The Jamaican team, 6 metres back, missed the previous world record by 0.04, but set a new national record. Another 7 metres back, Ukraine took the bronze, also setting a new national record.