The 2005–06 A Group was the 58th season of the top Bulgarian national football league (commonly referred to as A Group) and the 82nd edition of a Bulgarian national championship tournament.

It was contested by 16 teams, and Levski Sofia won the championship.

PFC Vidima-Rakovski Sevlievo, Nesebar, and Spartak Varna were relegated to the B PFG at the end of the last season.

The relegated teams were replaced by Vihren Sandanski, Pirin 1922 Blagoevgrad, and Botev Plovdiv.

[1] Vihren made their debut in the top tier of Bulgarian football, while both Pirin 1922 and Botev return after a one-year absence.