The 1999–2000 season was the 31st campaign of the Scottish Men's National League, the national basketball league of Scotland. The season featured 10 teams; from the previous season, Aberdeen Buccaneers joined the league and Glasgow Gators did not return. St Mirren won their first league title.[1] There were end of season playoffs for the first time in several seasons, with St Mirren beating City of Edinburgh Kings 2–1 in the final series.[2]