| Scottish National League Division One | |
| Pixels: | 250px |
| Sport: | Rugby union |
| Founded: | 1973 |
| Formerly: | National League, Premiership Division Two |
| Teams: | 10 |
| Level: | 2 |
| Pyramid: | Scottish rugby union system |
| Champion: | Kelso (5th title) |
| Most Successful Club: | Kelso and Stirling County (5 titles) |
| Promotion: | Premiership |
| Relegation: | National League Division Two |
The Scottish National League Division One (known as Tennent's National League Division 1 for sponsorship reasons) is the second tier of the Scottish League Championship for amateur rugby union clubs in Scotland.
The division was established in its current format in 2014, with the creation of three national leagues below the Premiership.
For the 2023–24 season, the division was reduced from 12 to 10 teams.[1]
The winners are promoted to the Scottish Premiership, with the runners-up entering a play-off at a neutral venue against the 9th-placed team in the Premiership. The bottom two teams are relegated to Scottish National League Division Two.
Promoted from 2022–23 National League Division 2
Relegated from 2022–23 Scottish Premiership
| Club | Location | Home Ground | |
|---|---|---|---|
| Ayr | Millbrae | ||
| Biggar | Biggar | Hartree Mill | |
| Dundee Rugby | Dundee | ||
| Gala | Galashiels | Netherdale | |
| GHA | Giffnock | Braidholm | |
| GHK | Glasgow | Old Anniesland | |
| New Anniesland | |||
| Highland | Inverness | Canal Park | |
| Melrose | Melrose | Greenyards | |
| Watsonian | Edinburgh | Myreside Stadium |
Winners of the second tier competition – includes National League Division Two (1973–1995), Premiership Division Two (1996–2012), National League (2013–2014) and National League Division One (2015–present)National League Division Two
Premiership Division Two
National League
National League Division 1