| South Africa|
| 27 April – 5 October 1991|
Northern Transvaal (17th title)
The 1991 Currie Cup (known as the Bankfin Currie Cup for sponsorship reasons) was the top division of the Currie Cup competition, the premier domestic rugby union competition in South Africa. This was the 53rd season since the competition started in 1889 and the first time it was known as the Bankfin Currie Cup, following the sponsors' name change from Santam Bank.
The Currie Cup competition was reduced to six teams, with Northern Free State and Western Transvaal relegated to the 1991 Currie Cup Central A competition.
1991 Currie Cup Wikipedia
There were six participating teams in the 1991 Currie Cup. These teams played each other twice over the course of the season, once at home and once away. Teams received two points for a win and one points for a draw. The top two teams qualified for the finals.
However, with teams tied on points, play-offs would be held to determine the finalists.
In addition, all the Currie Cup teams also played in the 1991 Currie Cup / Central Series.