The twelve teams in the tournament were divided into two pools of six, with each team initially playing round-robin games within their pool. Following the completion of the round-robin, the top two teams from each pool advanced to the semi-finals. All other teams played classification matches to determine the final tournament rankings. The two semi-final winners met for the gold medal match, while the semi-final losers played in the bronze medal match.
Each of the continental champions from five federations and the hosts Britain received an automatic berth. The European, Asian and Oceanian federations received one extra quota based upon the FIH World Rankings at the completion of the 2010 World Cup. In addition to the three teams qualifying through the Olympic Qualifying Tournaments, the following twelve teams, shown with final pre-tournament rankings, competed in this tournament.[1]
^1 – South Africa won the African qualifier tournament but gave up their automatic berth on the premise that they should play a qualifier having deemed the African tournament as sub-standard. Eventually they won the Qualification Tournament 1. Instead, Argentina was invited as the highest ranked team not already qualified after the conclusion of the continental championships. Argentina ended up being the runners-up.[2][3]
As per statistical convention in field hockey, matches decided in extra time are counted as wins and losses, while matches decided by penalty shoot-outs are counted as draws.