1991–92 National Division 4 North
| 1991–92 National Division 4 North | |
|---|---|
| Countries | England |
| Champions | Aspatria (1st title) |
| Runners-up | Hereford (not promoted) |
| Relegated | Northern, Vale of Lune |
| Matches played | 110 |
The 1991–92 National Division 4 North was the fifth full season of rugby union within the fourth tier of the English league system, currently known as National League 2 North, and counterpart to the National Division 4 South (now National League 2 South). At the end of the season, newly promoted Aspatria made it a second promotion in a row by qualifying for the 1992–93 National Division 3, 1 point clear of Hereford.
At the other end of the table, Northern and Vale of Lune were the two sides to go down. Vale of Lune were the more competitive, finishing dead level with Walsall on 7 points each, but in the end a worse for/against record condemned the Lancaster side to their second relegation in a row. Both Northern and Vale of Lune would drop to North 1.