Serving as a venue to provide professional development, networking, mentorship and leadership opportunities among local Ag community, regional branches are the grass-roots of the OIA. There are active OIA Branches across the Province of Ontario:

Branch NameAreas ServedBranch Contact
CentralGreater Toronto AreaContact this Branch Adolph Ng, P.Ag.
GuelphGuelph AreaContact this Branch Mike Dougherty, P.Ag.
Hamilton-NiagaraHamilton-Niagara AreaContact this Branch Dan Roberts, A.Ag
HuroniaHuronia AreaContact this Branch Andy Van Niekerk, P.Ag.
NorthernNorthern Ontario AreaContact this Branch Contact OIA Head Office
Ottawa - St. LawrenceOttawa - St. Lawrence AreaContact this Branch Joanne Gale, P.Ag.
QuinteQuinte AreaContact this Branch Contact OIA head office
WesternLondon AreaContact this Branch Contact OIA head office