Watford Sunday Observer League

The Watford Sunday Observer League is an amateur football league based in Watford, Hertfordshire, England. It was founded in 1928 and currently consists of four divisions, with a total of 41 teams.

In the 2022/23 season, the league welcomed eight new clubs and two that had been re-elected. The Premier Division now consists of 12 teams, while Division One has 11 teams.

The league also introduced a new cup competition, the Denis Jackson Intermediate Cup, in the 2022/23 season.