2011 NatWest Women's Quadrangular Series
| Dates | 30 June – 7 July 2011 |
|---|---|
| Administrator(s) | England and Wales Cricket Board |
| Cricket format | ODI (50 overs) |
| Host(s) | England |
| Champions | England |
| Runners-up | Australia |
| Participants | 4 |
| Matches | 8 |
| Player of the series | Jess Duffin (Aus) |
| Most runs | Lydia Greenway (Eng) (177) |
| Most wickets | Sarah Coyte (Aus) (12) |
The NatWest Women's Quadrangular Series was a Women's One Day International series which took place in England in 2011. The top four ranked teams in the world competed: Australia, England, India and New Zealand. The tournament consisted of a round-robin group stage, in which Australia and England finished as the top two, and then a third-place play-off and a final were contested to decide the final positions. England defeated Australia by 34 runs in the final. The tournament followed a Twenty20 Quadrangular Series, with the same teams competing.