1989–90 National Division 3
| 1989–90 National Division 3 | |
|---|---|
| Countries | England |
| Date | 2 September 1989 – 30 April 1990 |
| Champions | London Scottish (1st title) |
| Runners-up | Wakefield (also promoted) |
| Relegated | London Welsh |
| Matches played | 66 |
| Top point scorer | 102 – Andy Higgin (Vale of Lune) |
| Top try scorer | 7 – Brendan Hanavan (Fylde) Mike Harrison (Wakefield) |
The 1989–90 National Division 3 (sponsored by Courage Brewery) was the third 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 London Scottish and London Welsh (relegated from tier 2) and Lydney and Roundhay who were promoted up from tier 4.
London Scottish won all their eleven matches and won promotion with three matches remaining, to return to the 1990–91 National Division 2 after one season away. Wakefield finished second and were also promoted. London Welsh finished in last place and was relegated to the 1990–91 Courage National 4 South in what was the club's second demotion in a row.