I've been thinking lately on which MMA fighters are currently completely undefeated, not just inside one promotion, but in their entire career with at least 5 fights and I just got bored, so I decided to make a list out of the names I already knew. Thought it'd be nice to share with you. Besides the truly undefeated I also listed a few fighters that have faced a loss, but havent lost in years. I listed the entirely undefeated ones descending from the amount of wins and the long-time undefeated ones listed descending from time since last loss.

Ofcourse its possible I overlooked some, so feel free to contribute if you know one or correct me if I made a mistake.

Megumi Fuji (19-0)
Division: (Female) Flyweight
Current Promotion: Shooto
Way of wins:16 by submission, 3 by decision

Lyoto Machida (16-0)
Division: Light Heavyweight
Current Promotion: UFC
Way of wins: 5 by knockout, 2 by submission, 9 by decision

Phillip Miller (16-0)
Division: Middleweight
Current Promotion: [UNKNOWN]
Way of wins: 4 by knockout, 7 by submission, 4 by decision

Nazareno Malegarie (15-0)
Division:
Current Promotion: NSF
Way of wins: 4 by knockout, 10 by submission, 1 by decision

Shane Carwin (12-0)
Division: Heavyweight
Current Promotion: UFC
Way of wins: 7 by knockout, 5 by submission
Note: Shane Carwin ended all of his fights in Round 1

Ryan Bader (11-0)
Division: Light Heavyweight
Current Promotion: UFC
Way of wins: 5 by knockout, 3 by submission, 3 by decision

Sarah Kaufman (11-0)
Division: (Female) Featherweight
Current Promotion: Strikeforce
Way of wins: 8 by knockout, 3 by decision

Rickson Gracie (11-0)
Division:
Current Promotion: Retired in 2000
Way of wins: 11 by submission

Josh Bryant (10-0)
Division: Light Heavyweight
Current Promotion: HeatXC / FCF
Way of wins: 2 by knockout, 4 by submission, 4 by decision

Gray Maynard (9-0, 1NC)
Division : Lightweight
Promotion : UFC
Way of wins: 2 by knockout, 7 by decision

Cain Velasquez (8-0)
Division: Heavyweight
Current Promotion: UFC
Way of wins: 7 by knockout, 1 by decision

Aaron Simpson (7-0)
Division: Middleweight
Current Promotion: UFC
Way of wins: 6 by knockout, 1 by decision

Bobby Lashley (5-0)
Division: Heavyweight
Current Promotion: Strikeforce
Way of wins: 2 by knockout, 2 by submission, 1 by decision

Undefeated for a long time

Fedor Emelianenko (32-1-0, 1NC)
Division: Heavyweight
Current Promotion: Strikeforce
Last Loss: December 22, 2000
Note: The one and only loss in Fedor’s was due to a cut in a fight dominated by Fedor himself. According to the rules of the promotion that time, the cut resulted in a loss for Fedor. The rematch was won by Fedor. Later in Pride, Fedor got himself in a same kind of situation against Big Nog, but the match-up was turned into a No Contest. The rematch was won by Fedor.

Jake Shields (24-4-1)
Division: Middleweight
Current Promotion: Strikeforce
Last Loss: December 14, 2004

Anderson Silva (25-4)
Division: Middleweight
Current Promotion: UFC
Last Loss: January 20, 2006 (DSQ), December 31, 2004 (Last defeat)

Cristiane Santos (9-1)
Division: (Female) Featherweight
Current Promotion: Strikeforce
Last Loss: May 17, 2005

Jose Aldo (16-1)
Division: Featherweight
Current Promotion: WEC
Last Loss: November 26, 2005

George St. Pierre (20-2)
Division: Welterweight
Current Promotion: UFC
Last Loss: April 7, 2007

Cool! Very interesting list!

All of those fighters are really exiting to watch too. They have that little extra.

Yeah nice list. The only person I don't like watching in the undefeated list is Gray Maynard.

Nice post man...some interesting ones.

Never seen a Rickson gracie fight but out of all the Gracies he is the one they all say is the greatest.

Nice list. Jake Shields hasn't lost since December of 2004.

If it weren't for the worst ref in the biz Jon Bones would be up there.

Dammit Mazzagatti.

And you got Rickson's record wrong, it's actually 400-0.

Bobby Lashley

gsp no one will ever stop a takdown

thanks nice list.