BT National League Division 3
| Sport | Rugby union |
|---|---|
| Founded | 1973 |
| No. of teams | 12 |
| Country |
 Scotland
|
| Most recent champion(s) |
Dumfries Saints |
| Level on pyramid | 4 |
| Promotion to | National League Division Two |
| Relegation to | Regional Leagues |
The Scottish National League Division Three (known as the BT National League Division 3 for sponsorship reasons) is the fourth tier of the Scottish League Championship for amateur rugby union clubs in Scotland.
Until 2011, the division was the sixth tier of amateur club rugby in Scotland. For season 2011–12, league reconstruction reduced the number of nationwide leagues from six to two and the division ceased to exist. However further changes in 2014–15 increased the amount of nationwide leagues to four, and with it the National League Division Three name returned.
The top two teams are promoted to National League Division Two and the bottom three teams relegated to the appropriate Regional League - Caledonia, East or West - depending on their geographic location. The winners of the top division in each regional league are promoted to Scottish National League Division Three.
Promoted from 2015–16 BT Regional Leagues
Relegated from 2016–17 Scottish National League Division Two
Details: [1]
Winners of the fourth tier competition – includes National League Division 1 (1973–2012) and National League Division Three (2015–)
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