Ontario High School

Golden Horseshoe	Metro	National Capital ⁽¹⁾	Northern	Western Region
*G.H.A.C.*	*C.I.S.A.A.* ⁽⁶⁾	*C.O.S.S.A.*	*N.O.S.S.A.*	*C.W.O.S.S.A.*
Halton ⁽⁴⁾	Independent ⁽⁴⁾	Bay of Quinte ⁽⁴⁾	Nipissing	Bluewater
Hamilton Wentworth Catholic		Kawartha ⁽⁴⁾	Sault Ste. Marie	Brant County ⁽⁴⁾
			Sudbury	Guelph
				Waterloo County
R.O.P.S.S.A.A.	L.O.S.S.A.	E.O.S.S.A.A.	N.W.O.S.S.A.A.	S.W.O.S.S.A.A.
Peel Region ⁽⁴⁾	Durham Region ⁽⁴⁾	Kingston	Thunder Bay	Kent County ⁽⁵⁾
		Lanark-Renfrew County⁽²⁾		Lambton County ⁽⁵⁾
S.O.S.S.A.	T.D.C.A.A.	Eastern Ontario Football Conference ⁽²⁾		Windsor-Essex County
Hamilton Wentworth Public	Toronto Catholic ⁽⁴⁾	CSDCEO (LFC)⁽³⁾		Kent-Lambton merged 2014
Niagara Public ⁽⁴⁾		SDGA
Niagara Catholic ⁽⁴⁾	T.D.S.B.	G.B.S.S.A.		W.O.S.S.A.A.
	Toronto Public ⁽⁴⁾	Simcoe Public		Thames Valley Central
		Simcoe Catholic		Thames Valley London
N.S.S.A.A. ⁽⁷⁾	Y.R.A.A.	N.C.S.S.A.A.		Thames Valley South-east ⁽³⁾
Haldimand-Norfolk	York Region	Ottawa

⁽¹⁾ Region conducts A/AA Bowl playdowns	⁽⁴⁾Juniors compete in the Ontario Regional Junior Football Championship
⁽²⁾ League competes only in A/AA playdowns	⁽⁵⁾ Leagues have merged for 2014 season (Senior level)
⁽³⁾ League does not compete in Bowl playdowns	⁽⁶⁾ Athletic Association does not compete in OFSAA Bowls
	⁽⁷⁾ League has schools participating across two Athletic Associations