1990–91 National Division 3
The 1990–91 National Division 3 was the fourth season of the third tier of the English rugby union league system, the Courage Clubs Championship, currently known as National League 1. New teams to the division included Broughton Park, Clifton, Metropolitan Police and Morley, all of whom were promoted from tier 4, and due to reorganisation of the league structure at the end of the previous season, there were no relegated sides coming down from tier 2.
West Hartlepool finished the season as champions, two points clear of runners up Morley. Both sides would be promoted to the 1991–92 National Division 2, with Morley having been promoted for the second year running. At the other end of the table, the relegated sides were Vale of Lune and Metropolitan Police, dropping to the new look 1991–92 National Division 4 North and 1991–92 National Division 4 South respectively.
Structure
The division increased from twelve teams to thirteen, each side playing the others once to make a total of twelve matches each. The top two sides would be promoted to National Division 2 while the bottom two would drop to either National Division 4 North or National Division 4 South depending on locality.Participating teams and locations
| Team | Stadium | Capacity | City/Area | Previous season |
| Askeans | Broad Walk | 1,500 | Kidbrooke, London | 5th |
| Broughton Park | Chelsfield Grove | 2,000 | Chorlton-cum-Hardy, Manchester | Promoted from Area North |
| Clifton | Station Road | 2,200 | Cribbs Causeway, Henbury, Bristol | Promoted from Area South |
| Exeter | County Ground | 5,750 | Exeter, Devon | 6th |
| Fylde | Woodlands | 7,500 | Lytham St Annes, Lancashire | 8th |
| Lydney | Regentsholm | 3,000 | Lydney, Gloucestershire | 10th |
| Metropolitan Police | Imber Court | 3,500 | East Molesey, Surrey | Promoted from Area South |
| Morley | Scatcherd Lane | 6,000 | Morley, Leeds | Promoted from Area North |
| Nuneaton | Harry Cleaver Ground | 5,000 | Nuneaton, Warwickshire | 11th |
| Roundhay | Chandos Park | 3,000 | Roundhay, Leeds West Yorkshire | 7th |
| Sheffield | Abbeydale Park | 3,300 | Dore, Sheffield, South Yorkshire | 4th |
| Vale of Lune | Powderhouse Lane | 9,860 | Lancaster, Lancashire | 9th |
| West Hartlepool | Brierton Lane | 4,950 | Hartlepool, Cleveland | 3rd |