The 1991 Currie Cup Rural D was the fifth 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.
Teams
Changes between 1990 and 1991 seasons
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. , , , and moved to the 1991 Currie Cup Rural D.

Changes between 1991 and 1992 seasons
Following the merger of all rugby governing bodies in South Africa, and were dissolved. Currie Cup Rural D was reduced to three teams for 1992. The Currie Cup Rural D was renamed Currie Cup Rural B for 1992.

Competition
There were five participating teams in the 1991 Currie Cup Rural D 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 D competition played off against the winner of the Rural C competition for the Bankfin Trophy.

Log
Fixtures and results
Round one
Round two
Round three
Round four
Round five
Round six
Round seven
Round eight
Round nine
Round ten
Final
The winner of the Rural D competition played off against the winner of the Rural C competition for the Bankfin Trophy.
Relegation play-off
In the play-off match, beat to clinch a spot in the 1992 Currie Cup Rural A, while would play in the 1992 Currie Cup Rural B.





