2009–10 Andebol 1

The 2009–10 Andebol 1 (Campeonato Nacional Andebol 1) was the 59th season of Portuguese premier handball league. It ran from 12 September 2009 to 5 June 2010. Porto won their fifteenth title and the second consecutive season.

Teams
The 12 teams contesting the 2009–10 Andebol 1 season were: