N.A. Heavyweight: 206-265 lbs.

Doug Marshall and Anthony Arria compete for the inaugural WEC North American heavyweight championship.
1	Doug Marshall	def.	Anthony Arria	Submission (armbar) @ 0:22 of R1	WEC 10: Bragging Rights	05.21.04
		def.	Carlos Garcia	Knockout (punches) @ 2:46 of R1	WEC 12: Halloween Fury 3	10.21.04
Doug Marshall vacates the WEC North American heavyweight championship in order to compete for the WEC world heavyweight championship. Justin Eilers and Jimmy Ambriz compete for the vacant WEC North American heavyweight championship.
2	Justin Eilers	def.	Jimmy Ambriz	TKO (doctor stoppage) @ 5:00 of R1	WEC 21: Tapout	06.15.06
		def.	Josh Diekmann	TKO (punches) @ 2:29 of R1	WEC 24: Full Force	10.12.06
World Extreme Cagefighting chooses to dissolve the WEC North American heavyweight championship. World Extreme Cagefighting ceases operations and folds on December 16, 2010 after being purchased by UFC parent company Zuffa and ultimately merged with the Ultimate Fighting Championship.