Established in 1993

Formerly referred to as the Thunder Bay Junior B/Juvenile/AAA Hockey League, then Thunder Bay Junior B Hockey League, the LJHL has, in the past, mixed itself with Juvenile and Midget "AAA" teams in the Thunder Bay region for regular season games. In those seasons, only the Junior teams are eligible for the playoffs.

The league playoff champions earn the right to compete for the Keystone Cup, the Western Canadian Junior "B" championship. Hockey Canada does not offer a Junior "B" National championship therefore regional (Southern Ontario-Sutherland Cup, Ottawa District-Carson Trophy, Quebec-Coupe Dodge, Atlantic Canada-Don Johnson Memorial Cup) winners lay claim as top teams at the level.

Former teams

• Aguasabon River Rats (2004-05)
• First Nation Screaming Eagles (2010-11)
• Fort William Hurricanes (1993-2000)
• K&A Wolverines (2003-09) 
• NNEC Wolfpack (2002-03)
• Northern Hawks Juvenile AAA (2009-11)
• Northern Renegades (2011-13)
• Northwestern Wildcats (1993-97)
• Smooth Rock Falls Thunder (2015)
• Superior Eagles AAA (2008-09)
• Thunder Bay Kings AAA (2008-11; 2015-19)
• Thunder Bay Wildcats (2015)
• Thunder Bay Wolves (2000-01)
• Westfort Maroons (2000-06)