The 1970–71 Ashes series was the 45th edition of the long-standing cricket rivalry between England and Australia. Starting on 27 November 1970, the two sides ended up playing seven Tests; six were originally scheduled, but one extra Test was added to compensate for the abandoned Third Test.
Australia went into the series as the holders of the urn, having successfully defended it in 1968, drawing the series 2-all. However, they went into the 1970-71 series having suffered a demoralising 4-0 series defeat in South Africa. Meanwhile, England had gone undefeated in Test cricket since losing at Old Trafford in 1968. Ray Illingworth was appointed captain after the incumbent Colin Cowdrey had injured an Achilles early in 1969, and led England to series victories against West Indies and New Zealand during that English summer.
The Test matches were scheduled for five days with six hours play each day, with a rest day on the Monday, and overs were eight balls long. It formed part of the MCC