#1. Joanna Jedrzejczyk (11-0-0)
Born in Poland, Joanna Jedrzejczyk competes is the current women's champion in the strawweight division of the UFC. She is a six-time world champion and four-time European champion in Muay Thai. She is only the fourth European champion in UFC history.
Jedrzejczyk signed with the UFC in July 2014 and became the straw weight champion on March 14, 2015 when she beat Carla Esparza. She has since defended her title against Jessica Penne in June 2015 and Calerie Letourneau in November 2015.
#2. Holly Holm (10-0-0)
Nicknamed "The Preacher's Daughter," Holm hails from Albuquerque, New Mexico. She is the current UFC bantamweight champion after beating Ronda Rousey on November 14, 2015.
Holm signed with the UFC after spending time in the Legacy Fighting Championship and Belabor MMA leagues. She is also a former professional boxer and kick boxer. Her win against Rousey was the biggest fight of her life that took place in front of a record breaking crowd.
Her next fight is against Miesha Tate in March 2016 at UFC 196.
#3. Ronda Rousey (12-1-0)
From Riverside, California, the former bantamweight champion has found superstardom in the UFC. The former Olympic bronze medalist in judo, dominated the sport since she entered in to MMA in 2010. She was the first female fighter to sign with the UFC.
With her popularity it's no surprise that Hollywood would eventually call. Rousey made her first film appearance in The Expendables 3 and has since had roles in Furious 7, Entourage and is expected to star in the remake of the Patrick Swayze classic, Roadhouse.
In 2015, she was the 3rd most searched person on Google.
#4. Cristiane Justino (15-1-0, 1 ND)
Born in Brazil, "Cyborg" is the former Strikeforce Women's Featherweight Champion, the current Invite FC World Featherweight Champion and is currently signed with the UFC. He United States MMA debut came in July 2008 against Shayna Baszler where she won by TKO in the second round.
She became the Strikeforce Featherweight Champion in 2009, when she defeated Gina Carano by TKO with 1 second left in the first round.
Justino is expected to make her UFC debut some time this year.
#5. Miesha Tate (17-5-0)
Born in Tacoma, Washington, Tate began her MMA career in 2007. She was the Strikeforce Bantamweight Champion before entering the UFC in 2013. It has been her fights against Ronda Rousey that UFC President, Dana White, has credited to the creation of women's divisions in the UFC.
Tate was the first fighter to face Rousey and take her beyond the first round (the second fighter was Holm). Unfortunately, Tate has never defeated Rousey which means she has never gotten to the title of UFC Champion.
She will get her third shot at the title on March 5, 2016 when she squares off against the newly crowned champion, Holly Holm.
#6. Cat Zingano (9-1-0)
Born in Winona, Minnesota, Zinging made her MMA debut in 2008. She made history by participating in the second women's match in the UFC when she squared off against Miesha Tate in April of 2013. It was in the third round of that fight that she made history again, buy becoming the first woman to win a UFC fight by TKO, knocking out Tate.
Zigano suffered her first loss in MMA when she was matched up against Ronda Rousey at UFC 184.
#7. Claudia Gadelha (13-1-0)
The Brazilian fighter is currently competing in the Women's Strawweight division of the UFC. She made her debut in 2008 at Force Fighting Championship 1 against Elaine Leite. Gadelha won that fight via armor in 17 seconds.
Gadelha signed with the UFC in 2013. It was announced in January that she, along with Joanna Jedrzejczyk, would act as a coach for The Ultimate Fighter 23. The show will premiere on Fox Sports 1 on April 10, 2016.
#8. Carla Esparza (10-3-0)
From Torrance, California, Esparza is the former UFC Women's Strawweight Champion. She was also the first Invicta Strawweight Champion. She has fought in the first women's Belabor Fighting Championship. Esparza made her MMA debut in 2010.
In 2013, it was announced that she was signed by the UFC to compete in season 20 of The Ultimate Fighter. She was the number one seed in the tournament where she ultimately won.
Esparza faced Joanna Jedrzejczyk on March 14, 2015 at UFC 185 where she fell to the champion by TKO in the second round.
#9. Ayaka Hamasaki (12-1-0)
From Tokyo, Japan, Hamasaki made her MMA debut in 2009. She has competed in both the Jewels and Shooto events.
She made her United States debut at Invicta FC 2 in 2012. She was scheduled to face Carla Esparza for the Invite FC Strawweight Championship at Invite FC 4 but withdrew to defend her Jewels title.
In 2013 she faced Claudia Gadelha at Invite FC 6 where she lost by TKO in the third round.
#10. Karolina Kowalkiewicz (8-0-0)
From Poland, Kowalkiewicz currently fights for the UFC. She is the former KSW Women's Strawweight Champion. She made her US debut for Invicta FC in November 2014.
Her first appearance in the UFC took place in December 2015 where she fought Randa Markos. She won by unanimous decision.
#11. Amanda Nunes (11-4-0)
Another Brazilian fighter, Nunes fights in the Bantamweight division of the UFC. She made her MMA debut in 2008 at Prime MMA Championship 2 before fighting in Strikeforce and Invicta FC.
Her UFC debut took place at UFC 163 in 2013 where she defeated Sheila Gaff by TKO in the first round. Her first (an so far only) loss in the UFC, came against Cat Zingino at UFC 178. She has since won her last two fights.
#12. Livia Renata Souza (9-0-0)
Also from Brazil, Souza currently competes at Invicta FC in the straw weight division. She is considered the best Strawweight MMA fight in the world OUTSIDE of the UFC. Souza defeated Katja Kankaanpaa to win the straw weight title at Invicta FC 12.
She won her title on her very first fight.
#13. Jessica Aguilar (19-5-0)
Aguilar is a Mexican-born American who is currently signed with The UFC. She joined the UFC after voluntarily departing from the World Series of Fighting where she was the reigning WSOF Women's Strawweight Champion. Aguilar previously competed for Bellator FC.
Aguilar lost her debut UFC fight to Claudia Gadelha by unanimous decision on August 1, 12015 at UFC 190.
#14. Herica Tiburcio (9-3-0)
From Brazil, Tiburcio competes at Invicta FC in the Atomweight division and is the former Invicta FC Atomweight Champion. She was the youngest fighter in the league to become champion at age 21. Like her fellow Brazilian Livia Souza, Tiburcio won her title by winning in her first fight.
Her first title defense came against Ayaka Hamasaki at Invite FC 13. She lost via split decision.
#15. Michelle Waterson (13-4-0)
Born in Colorado Springs, Colorado, Waterson competes in the UFC and is the former Invicta FC Atomweight Champion. She made her MMA debut in 2007 where she beat Andrea Miller by unanimous decision. She challenged for the Invicta FC Atomweight Championship at Invicta FC 5 where she was the main event against Jessica Penne. She won that fight via armor submission in the fourth round.
Waters successfully defended her title against Yasuo Tamada at Invicta FC 8. She lost her title to #14 on this list, Herica Tiburcio, at Invicta FC 10 in December of 2014.
In April 2015, it was announced that Waterson signed with the UFC. Her UFC debut was to take place against Tecia Torres at UFC 194 but had to pull out due to a knee injury.