Scottish National League Division One

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.

Promotion and Relegation
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
 * Glasgow Academicals (1st)

Relegated from 2022–23 Scottish Premiership
 * GHA (10th)

2023–24 Clubs
The Super 6 clubs were also allowed to run 2XV sides in this league for the 2019–20 season (not shown on map).

Past winners
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
 * 1) Kelso
 * 2) Langholm
 * 3) Selkirk
 * 4) Melrose
 * 5) Kelso
 * 6) Melrose
 * 7) Gordonians RFC
 * 8) Selkirk
 * 9) Kilmarnock RFC
 * 10) Ayr
 * 11) Glasgow Academicals
 * 12) Kilmarnock RFC
 * 13) Glasgow Academicals
 * 14) Kilmarnock RFC
 * 15) Jed-Forest
 * 16) Stirling County
 * 17) Edinburgh Wanderers
 * 18) Watsonians
 * 19) Kelso
 * 20) West Of Scotland
 * 21) Glasgow High Kelvinside
 * 22) Kelso
 * 1) Currie
 * 2) Edinburgh Academicals
 * 3) Glasgow Hawks
 * 4) Gala
 * 5) Boroughmuir
 * 6) Stirling County
 * 7) Peebles
 * 8) Watsonians
 * 9) Gala
 * 10) Stirling County
 * 11) Dundee HSFP
 * 12) Stirling County
 * 13) West Of Scotland
 * 14) Dundee HSFP
 * 15) Stirling County
 * 16) Edinburgh Academicals (split format)
 * 17) Jed-Forest
 * 1) Glasgow Hawks
 * 2) Boroughmuir
 * 1) Selkirk
 * 2) Watsonians
 * 3) Marr
 * 4) Edinburgh Academicals
 * 5) Marr
 * 6) Null and void
 * 7) No competition
 * 8) Heriot's Blues
 * 9) Kelso
 * Ayr