The 2012 international cricket season was from April 2012 to August 2012. One year after gaining the number-one ranking in the ICC Test Championship, England lost the ranking to South Africa in August 2012 following a 0–2 Test series defeat at home. Also in August 2012, England rose to number one in the ICC ODI Championship following ten consecutive ODI victories and the annual update of the rankings. The update also put South Africa and India within one rankings point behind England.
The previous number one ODI team was Australia, who slipped to number four after holding the top spot from September 2009. Shortly before they lost the ranking, they lost 0–4 in an ODI series in England. It marked the end to their era of dominance in ODI cricket which included three consecutive World Cup wins, two ICC Champions Trophy wins and finishing nine of the past eleven years with the number-one ranking. The annual update also put South Africa at the top of the ICC T20I Championship rankings, replacing England. However, the T20I rankings would change significantly as a result of the 2012 ICC World Twenty20 at the start of the following season.
Although contested by three ICC full member nations, this tournament does not have Twenty20 International status, because it was organised outside of the ICC Future Tours Programme. The matches are considered to be first-class-equivalent Twenty20 matches.