Title History – UFC World Champions
Published by on December 14th, 2007 in Almanac

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UFC HEAVYWEIGHT CHAMPIONS
Fighter, Date won title (specific show)
Mark Coleman, February 7 1997 (UFC 12)
Maurice Smith, July 27 1997 (UFC 14)
Randy Couture, December 21 1997 (UFC Japan)
Bas Rutten, May 7 1999 (UFC 20)
Kevin Randleman, November 19 1999 (UFC 23)
Randy Couture (2nd reign), November 17, 2000 (UFC 28)
Josh Barnett, March 22 2002 (UFC 36)
Ricco Rodriguez, September 27 2002 (UFC 39)
Tim Sylvia, February 28 2003 (UFC 41)
Frank Mir, June 19 2004 (UFC 48)
Andrei Arlovski (interim), February 5 2005 (UFC 51)
Andrei Arlovski (won undisputed), August 12 2005 (UFC 55)
Tim Sylvia (2nd reign), April 15 2006 (UFC 59)
Randy Couture (3rd reign), March 3 2007 (UFC 68)

UFC LIGHT HEAVYWEIGHT CHAMPIONS
Frank Shamrock, December 21 1997 (UFC Japan)
Tito Ortiz, April 14 2000 (UFC 25)
Randy Couture (interim), June 6 2003 (UFC 43)
Randy Couture (undisputed), September 26 2003 (UFC 44)
Vitor Belfort, January 31 2004 (UFC 46)
Randy Couture (2nd reign), August 21 2004 (UFC 49) ,
Chuck Liddell April 16 2005 (UFC 52)
Quinton Jackson, May 26 2007 (UFC 71)

UFC MIDDLEWEIGHT CHAMPIONS
Dave Menne, September 28 2001 (UFC 33)
Murilo Bustamante (later stripped), January 11 2002 (UFC 35)
Evan Tanner, February 5 2005 (UFC 51)
Rich Franklin, June 4 2005 (UFC 53)
Anderson Silva, October 14 2006 (UFC 64)

UFC WELTERWEIGHT CHAMPIONS
Pat Miletich, October 16 1998 (UFC Brazil)
Carlos Newton, May 4 2001 (UFC 31)
Matt Hughes, November 2 2001 (UFC 34)
B.J. Penn (later stripped), January 31 2004 (UFC 46)
Matt Hughes (2nd reign), October 22 2004 (UFC 50)
Georges St. Pierre, November 18 2006 (UFC 65)
Matt Serra, April 7 2007 (UFC 69)

UFC LIGHTWEIGHT CHAMPIONS
Jens Pulver (later stripped), February 23 2001 (UFC 30)
Sean Sherk, October 14 2006 (UFC 64)
BJ Penn, Jan 19, 2008 (UFC 80)