Welsh–Scottish League
| Sport | Rugby union |
|---|---|
| Instituted | 1999 |
| Number of teams | 11–12 |
| Nations | Scotland Wales |
| Most titles | Cardiff (1 title) Swansea (1 title) Llanelli (1 title) |
| Relegation to | WRU Championship (except 2001–02 season) |
The Welsh–Scottish League was a rugby union league in Scotland and Wales jointly implemented by the Scottish Rugby Union and the Welsh Rugby Union from the 1999–2000 season onwards. It was a precursor to the Celtic League and lasted three seasons, being disbanded after the Celtic League was set up.