The 2006–07 First Division season was the 13th season of the Scottish First Division in its current format of ten teams. It began on August 5, 2006 and ended on April 28, 2007.
Gretna gained promotion to the Premier League as champions, by a single point ahead of St Johnstone, with a 3-2 win at Ross County on the final day of the season, the winning goal coming from James Grady in injury time. The result relegated Gretna's opponents to the Second Division.
The ninth placed team in the First Division played the fourth placed team in the Second Division and third placed team in the Second Division played the second placed team in the Second Division. The play-offs were played over two legs, the winning team in each semi-final advanced to the final.