| 1991–92 Courage League National Division Three | |
| Date: | 16 November 1991 – 25 April 1992 |
| Champions: | Richmond (1st title) |
| Runnersup: | Fylde (also promoted) |
| Relegated: | Nuneaton, Lydney |
| Matches: | 78 |
| Prevseason: | 1990–91 |
| Nextseason: | 1992–93 |
The 1991–92 Courage League National Division Three was the fifth full season of rugby union within the third tier of the English league system, currently known as National League 1. Each side played one match against the other teams, playing a total of twelve matches each.
| Team | Ground | Capacity | City/Area | Previous season |
|---|---|---|---|---|
| Broad Walk | 6th | |||
| Chelsfield Grove | 8th | |||
| Station Road | 2,500 | 5th | ||
| 5,200 | 4th | |||
| 9,000 | 3rd | |||
| Clarence Field | Relegated from Courage League Division 2 (13th) | |||
| Regentsholm | 1,500 | 11th | ||
| 5,000 | Promoted from National 4 North (champions) | |||
| Harry Cleaver Ground | 7th | |||
| Recreation Ground | 12,000 | Promoted from National 4 South (champions) | ||
| 4,500 | Relegated from Courage League Division 2 (12th) | |||
| Chandos Park | 9th | |||
| 3,200 | 10th | |||