Junior B

Junior B may refer to:


 * Junior ice hockey leagues in Canada:
 * Calgary Junior Hockey League
 * Capital Junior Hockey League, in Alberta
 * Capitale Junior AA Hockey League, in Quebec
 * Central Junior B Hockey League of the Ontario Junior Hockey League
 * Chaudiere-Appalaches Junior AA Hockey League, in Quebec
 * Eastern Ontario Junior Hockey League
 * Estrie-Mauricie Junior AA Hockey League, in Quebec
 * Greater Ontario Junior Hockey League
 * Heritage Junior B Hockey League in Alberta
 * Island Junior Hockey League, in Prince Edward Island
 * Keystone Junior Hockey League, in Manitoba
 * Kootenay International Junior Hockey League, in British Columbia
 * Laurentides-Lanaudière Junior AA Hockey League, in Quebec
 * Ligue de Hockey Junior AA Lac St-Louis, in Quebec
 * Ligue de Hockey Junior AA Saguenay-Lac-St-Jean, in Quebec
 * Métropolitaine Junior AA Hockey League, in Quebec
 * New Brunswick Junior B Hockey League
 * North Eastern Alberta Junior B Hockey League
 * North West Junior Hockey League, in Alberta and British Columbia
 * Nova Scotia Junior B Hockey League of the Nova Scotia Junior Hockey League
 * Pacific Junior Hockey League, in British Columbia
 * Prairie Junior Hockey League, in Saskatchewan
 * St. John's Junior Hockey League, in Newfoundland and Labrador
 * Thunder Bay Junior B Hockey League
 * Vancouver Island Junior Hockey League, in British Columbia
 * Western Junior B of the Western Ontario Hockey League
 * Defunct junior ice hockey leagues in Canada
 * Border Cities Junior B Hockey League, a hockey league that operated in Ontario from 1958 to 1964
 * Eastern Junior B Hockey League, a hockey league in eastern Ontario
 * Golden Horseshoe Junior B of the Golden Horseshoe Junior Hockey League
 * International Junior B Hockey League, which operated in northern Ontario and northern Michigan in the United States
 * Metro Junior B Hockey League, predecessor of the Metro Junior A Hockey League
 * Mid-Ontario Junior B Hockey League in southern Ontario
 * Mid-Western Junior Hockey League, previously known as the Southwestern Junior B Hockey League (1973–1974) and the Waterloo-Wellington Junior B Hockey League 1974–1977
 * Niagara District Junior B Hockey League, that operated from 1956 to 1979
 * North of Superior Junior B Hockey League
 * North Saskatchewan Junior B Hockey League
 * Western Junior B Hockey League; see Western Ontario Hockey League
 * Ontario Junior B Lacrosse League