| South Africa|
| Eastern Free State|
| 27 April – 31 August 1991|
The 1991 Currie Cup Rural C was the fourth 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.
The 1990 season was the last edition of the Santam Bank Trophy. Instead, these teams were included in a Currie Cup Rural Division, which had a four-team Division C and a five-team Division D.
Eastern Free State were relegated from 1990 Currie Cup Division B to the 1991 Currie Cup Rural C.
North Eastern Cape, Northern Natal and Stellaland moved to the 1991 Currie Cup Rural C.
The Currie Cup Rural C was renamed Currie Cup Rural A for 1992.
1991 Currie Cup Rural C Wikipedia
There were four participating teams in the 1991 Currie Cup Rural C competition. 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 winner of the Rural C competition played off against the winner of the Rural D competition for the Bankfin Trophy.
In addition, all the Currie Cup Rural C teams also played in the 1991 Currie Cup Central / Rural Series.
The winner of the Rural C competition played off against the winner of the Rural D competition for the Bankfin Trophy.
In the play-off match, North Eastern Cape beat Lowveld to clinch a spot in the 1992 Currie Cup Rural A, while Lowveld would play in the 1992 Currie Cup Rural B.