The Westpac Stadium in Wellington and Christchurch's AMI Stadium beat bids from Auckland - North Harbour and Eden Park - and Hamilton's Waikato Stadium.
Rugby New Zealand (RNZ) 2011 chief executive Martin Snedden said: "This decision gives fans in the Wellington and Christchurch regions something really special to look forward to in 2011.
"The quarter-final weekends in both cities will be tremendous sporting and festival occasions."
Eden Park will host the finals, semi-finals and third place play-off.
