The champions are listed in reverse chronological order.
All-time UFC champions by division:
Heavyweight | Light heavyweight
Middleweight | Welterweight
Lightweight | Men's featherweight
Men's bantamweight | Men's flyweight
• Won title: June 3, 2017
• Outcome: TKO3 over Jose Aldo (UFC 212)
• Defenses: 3
• Won title: Dec. 12, 2015
• Outcome: KO1 over Jose Aldo (UFC 194)
• Defenses: 0*
* -- Stripped of the title on Nov. 26, 2016, for inactivity
• Won title: Nov. 20, 2010*
• Defenses: 7
* -- Just prior to UFC 123, the WEC champion was named inaugural UFC champion after WEC merged with UFC.