2005 V-League

The 2005 V-League, also known as the 2005 Number One V-League (Vietnamese: Giải bóng đá Vô địch Quốc gia Number One 2005) for sponsorship reasons, was the 22nd season of the V.League 1, the top Vietnamese professional league for association football clubs, since its establishment in 1980.

Đồng Tâm Long An won their first title in this season, displacing two-time champions Hoàng Anh Gia Lai.

Changes from the previous season
There were two teams relegated last season to the 2005 Vietnamese National Football First League. Thể Công and Ngân hàng Đông Á Thép Pomina, were relegated due to them finishing 11th and 12th respectively the previous season.

Two teams were promoted from the 2004 Vietnamese National Football First League: Cảng Sài Gòn, who won the title and returned to V-League after a one-year absence, and Hòa Phát Hà Nội, who finished second, playing in the V-League for the first time.