List of Strikeforce champions

Strikeforce is an United States-based mixed martial arts promotion, and the following is a history of its champions in each weight class.

Strikeforce champions[]

206 lb to 265 lb

No.	Name:	Date:	Location:	Defenses:
1	Alistair Overeem def. Paul Buentello	November 16, 2007 Strikeforce: Four Men Enter, One Man Survives	San Jose, CA	def. Brett Rogers on May 15, 2010 at Strikeforce: Heavy Artillery

186 lb to 205 lb

No.	Name:	Date:	Location:	Defenses:
1	Bobby Southworth def. Vernon White	December 8, 2006 Strikeforce: Triple Threat	San Jose, CA	def. Anthony Ruiz on June 27, 2008 at Strikeforce: Melendez vs. Thomson
2	Renato Sobral	November 21, 2008 Strikeforce: Destruction	San Jose, CA
3	Gegard Mousasi	August 15, 2009 Strikeforce: Carano vs. Cyborg	San Jose, CA
4	Muhammed Lawal	April 17, 2010 Strikeforce: Nashville	Nashville, TN
5	Rafael Cavalcante	August 21, 2010 Strikeforce: Houston	Houston, TX

171 lb to 185 lb

No.	Name:	Date:	Location:	Defenses:
1	Frank Shamrock def. Phil Baroni	June 22, 2007 Strikeforce: Shamrock vs. Baroni	San Jose, CA
2	Cung Le	March 29, 2008 Strikeforce: Shamrock vs. Le	San Jose, CA
The title was vacated on September 17, 2009 when Le stepped down due to filming obligations.
3	Jake Shields def. Jason Miller	November 07, 2009 Strikeforce: Fedor vs Rogers	Chicago, IL	def. Dan Henderson on April 17, 2009 at Strikeforce: Nashville
Title vacated when Shields signed with the Ultimate Fighting Championship.
4	Ronaldo Souza def. Tim Kennedy	August 21, 2010 Strikeforce: Houston	Houston, TX

156 lb to 170 lb

No.	Name:	Date:	Location:	Defenses:
1	Nick Diaz def. Marius Žaromskis	January 30, 2010 Strikeforce: Miami	Sunrise, FL	def. KJ Noons on October 9, 2010 at Strikeforce: Diaz vs. Noons II

146 lb to 155 lb

No.	Name:	Date:	Location:	Defenses:
1	Clay Guida def. Josh Thomson	March 10, 2006 Strikeforce: Shamrock vs. Gracie	San Jose, CA
2	Gilbert Melendez	June 9, 2006 Strikeforce: Revenge	San Jose, CA	def. Gabe Lemley on March 29, 2008 at Strikeforce: Shamrock vs. Le
3	Josh Thomson	June 27, 2008 Strikeforce: Melendez vs. Thomson	San Jose, CA
	Gilbert Melendez def. Rodrigo Damm for interim title	April 11, 2009 Strikeforce: Shamrock vs. Diaz	San Jose, CA	def. Mitsuhiro Ishida on August 15, 2009 at Strikeforce: Carano vs. Cyborg
4	Gilbert Melendez (2) (def. Josh Thomson for undisputed title)	December 19, 2009 Strikeforce: Evolution‎	San Jose, CA	def. Shinya Aoki on April 17, 2009 at Strikeforce: Nashville

136 lb to 145 lb^[1]

No.	Name:	Date:	Location:	Defenses:
1	Cristiane Santos def. Gina Carano	August 15, 2009 Strikeforce: Carano vs. Cyborg	San Jose, CA	def. Marloes Coenen on January 30, 2010 at Strikeforce: Miami def. Jan Finney on June 26, 2010 at Strikeforce: Fedor vs. Werdum

126 lb to 135 lb^[1]

No.	Name:	Date:	Location:	Defenses:
1	Sarah Kaufman def. Takayo Hashi	February 26, 2010 ShoMMA 6	San Jose, CA	def. Roxanne Modafferi on July 23, 2010 at ShoMMA 9
2	Marloes Coenen	October 29, 2010 Strikeforce: Diaz vs. Noons II	San Jose, CA

170 lb to 185 lb

Name:	Date:	Location:	Defenses:
Eugene Jackson def. Ronald Jhun	December 8, 2006 Strikeforce: Triple Threat	San Jose, CA

145 lb to 155 lb

Name:	Date:	Location:	Defenses:
Josh Thomson def. Nam Phan	December 8, 2006 Strikeforce: Triple Threat	San Jose, CA	def. Nick Gonzalez on June 22, 2007 at Strikeforce: Shamrock vs. Baroni

Event	Weight class	Winner	Runner-up	Date
Strikeforce: Four Men Enter, One Man Survives	Middleweight	Jorge Santiago	Trevor Prangley	November 16, 2007
ShoMMA 10: Riggs vs. Taylor	Women's Welterweight (135 lbs.)	Miesha Tate	Hitomi Akano	August 13, 2010

↑ ^1.0 ^1.1 Strikeforce refers to the Women's 145-pound weight class as Middleweight and the 135-pound weight class as Welterweight. However, the weight classes listed here conform to the weight classes in the Unified Rules of Mixed Martial Arts.