Ob 70,

The OB 70 Amateur Football League is an Australian rules football competition in Melbourne, Victoria. It was founded in 1970 and currently consists of 70 teams, making it the largest senior community Australian rules football competition in Victoria.

The league is divided into seven divisions: Premier, Division 1, Division 2, Division 3, Division 4, Division 5, and Division 6. The top two teams in each division are promoted to the next division, while the bottom two teams are relegated to the next lower division.

The league also has a number of other competitions, including an Under 19s competition, a Women's competition, and a Masters competition for players over the age of 35.