1965–66 Western Football League

The 1965–66 season was the 64th in the history of the Western Football League.

The champions for the second time in their history, and the second season in succession, were Welton Rovers, who completed the season unbeaten.

The league was reduced from 22 clubs to 18 after Bath City Reserves, Bristol City Reserves, Chippenham Town, Poole Town Reserves and Yeovil Town Reserves all left the league. One new club joined:

^{1 The system of using goal average to separate two teams tied on points was used up to and including the 1976–77 season.}

^{2 The points system: 2 points for a win, 1 point for a draw and 0 points for losing.}