The D'Oliveira affair was a prolonged political and sporting controversy relating to the scheduled 1968–69 tour of South Africa by the England cricket team, who were officially representing the Marylebone Cricket Club (MCC). The point of contention was whether the England selectors would include Basil D'Oliveira, a mixed-race South African player who had represented England in Test cricket since 1966, having moved there six years earlier. With South Africa under apartheid, the potential inclusion by England of a non-white South African in their tour party became a political issue.
A Cape Coloured of Indian and Portuguese ancestry, D'Oliveira left South Africa primarily because the era's apartheid legislation seriously restricted his career prospects on racial grounds and barred him from the all-white Test team. He qualified for Worcestershire County Cricket Club through residency in 1964 and first played for England two years later. The consequences of D'Oliveira's possible inclusion in the 1968–69 MCC tour of South Africa were discussed by English and South African cricketing bodies as early as 1966. Manoeuvring by cricketing and political figures in both countries did little to bring the matter to a head. The MCC's priority was to maintain traditional links with South Africa and have the series go ahead without incident. South Africa's Prime Minister John Vorster sought to appease international opinion by publicly indicating that D'Oliveira's inclusion would be acceptable, but secretly did all he could to prevent it.