Ketlen Vieira, known as “Fenômeno,” is one of Brazil’s most accomplished female mixed martial artists. Competing in the UFC women’s bantamweight division, she’s recognized for her technical grappling, relentless fighting style, and her rise from Manaus to the global MMA stage. Here’s a detailed look at her personal life, career, finances, and achievements.
Ketlen Vieira’s Biography
| Attribute | Details |
| Full Name | Ketlen Vieira da Silva |
| Nickname | N/A |
| Date of Birth | August 26, 1991 |
| Age | 33 years |
| Place of Birth | Manaus, Amazonas, Brazil |
| Nationality | Brazilian |
| Ethnicity | Mixed descent (Native, European, African, and more) |
| Religion | Christian |
| Height | 5 ft 8 in (173 cm) |
| Weight | 135 lbs (61 kg) |
| Reach | 68 in (173 cm) |
| College | Universidade Nilton Lins (Law, did not graduate) |
| Turned Pro | October 2, 2014 |
| Net Worth (2025) | $500,000 |
| Salary (Recent Fights) | $110,000–$150,000 base per fight (excluding bonuses) |
| Spouse | Married to Robertinha |
| Relationship Status | Married |
| Children | N/A |
| Instagram Profile | @ketlenvieiraufc |
| Team | Nova União Manaus |
Early Career
Ketlen Vieira began training in Brazilian Jiu-Jitsu at age six and added judo at twelve, earning black belts in both. She also excelled in wrestling, winning a national title in Brazil. Initially pursuing a law degree at Universidade Nilton Lins, she left college to focus on MMA.
Training under Marcinho Pontes at Nova União Manaus, she made her pro debut in October 2014, quickly amassing an undefeated record in regional promotions and becoming Mr. Cage Bantamweight Champion before signing with the UFC.
Professional Career
Vieira entered the UFC in October 2016, debuting with a split-decision win over Kelly Faszholz. She quickly climbed the ranks with victories over Ashlee Evans-Smith, Sara McMann (via submission), and former title challenger Cat Zingano. Her first professional loss came against Irene Aldana by knockout in 2019.
Undeterred, she rebounded with wins over Sijara Eubanks, former champions Miesha Tate and Holly Holm, both by decision. Vieira has consistently faced top contenders, including Raquel Pennington and Kayla Harrison, maintaining her place among the division’s elite. As of 2025, she remains a top-3 bantamweight, known for her grappling and resilience.
Husband
Ketlen Vieira is married to Robertinha, a Brazilian Jiu-Jitsu competitor. The couple has been together for several years, and Vieira often shares her appreciation for her spouse on social media. There is no public information about children.
Ketlen Vieira’s Net Worth Details
As of 2025, Ketlen Vieira’s net worth is estimated at $500,000, accumulated primarily through UFC fight purses, win bonuses, and sponsorships.
Fight Purses
| Event | Opponent | Result | Purse (Show/Win/Sponsor) | Total Earnings (Est.) |
| UFC on ESPN 68 (May 2025) | Macy Chiasson | TBA | $150k/$100k/$11k | Up to $311,000 |
| UFC 307 (Oct 2024) | Kayla Harrison | Loss (Decision) | $110k/$100k/$10k | Up to $220,000 |
| UFC Fight Night 206 (2022) | Holly Holm | Win (Decision) | N/A | $140,000 |
| UFC Fight Night 198 (2021) | Miesha Tate | Win (Decision) | N/A | $120,000 |
| UFC Fight Night 185 (2021) | Yana Kunitskaya | Loss (Decision) | N/A | $80,000 |
| UFC 215 (2017) | Sara McMann | Win (Submission) | N/A | $90,000 |
| UFC on FOX 24 (2017) | Ashlee Evans-Smith | Win (Decision) | N/A | $70,000 |
Endorsements
- Venum (official UFC outfitting partner)
- Transire Electronics (Brazilian electronics company)
- Various regional brands in Brazil supporting her training and travel
Career Records
| Date | Opponent | Result | Method/Decision | Event |
| Oct 5, 2024 | Kayla Harrison | Loss | Unanimous Decision | UFC 307 |
| Jul 22, 2023 | Pannie Kianzad | Win | Unanimous Decision | UFC Fight Night: Aspinall vs. Tybura |
| Jan 14, 2023 | Raquel Pennington | Loss | Split Decision | UFC Fight Night: Strickland vs. Imavov |
| May 21, 2022 | Holly Holm | Win | Split Decision | UFC Fight Night: Holm vs. Vieira |
| Nov 20, 2021 | Miesha Tate | Win | Unanimous Decision | UFC Fight Night: Vieira vs. Tate |
| Feb 20, 2021 | Yana Kunitskaya | Loss | Unanimous Decision | UFC Fight Night: Blaydes vs. Lewis |
| Sep 26, 2020 | Sijara Eubanks | Win | Unanimous Decision | UFC 253 |
| Dec 14, 2019 | Irene Aldana | Loss | KO (Punches) | UFC 245 |
| Mar 3, 2018 | Cat Zingano | Win | Split Decision | UFC 222 |
| Sep 9, 2017 | Sara McMann | Win | Submission (Arm-Triangle) | UFC 215 |
| Apr 15, 2017 | Ashlee Evans-Smith | Win | Unanimous Decision | UFC Fight Night: Johnson vs. Reis |
| Oct 1, 2016 | Kelly Faszholz | Win | Split Decision | UFC Fight Night: Lineker vs. Dodson |
FAQs
1. Who is Ketlen Vieira?
Ketlen Vieira is a Brazilian professional mixed martial artist competing in the UFC women’s bantamweight division. She holds black belts in both Brazilian Jiu-Jitsu and Judo and is recognized for her grappling and striking skills.
2. What is Ketlen Vieira’s MMA record?
Ketlen Vieira has a professional record of 15 wins and 4 losses, with 2 wins by knockout, 4 by submission, and 9 by decision.
3. Where is Ketlen Vieira from?
Ketlen Vieira was born in Manaus, Amazonas, Brazil, and continues to train in her hometown.
4. When did Ketlen Vieira make her UFC debut?
She made her UFC debut on October 1, 2016, defeating Kelly Faszholz by split decision in Portland, Oregon.
5. What are Ketlen Vieira’s notable UFC victories?
Vieira has notable wins over former champions Miesha Tate and Holly Holm, as well as victories against Sara McMann, Cat Zingano, and Pannie Kianzad.
6. What is Ketlen Vieira’s fighting style and background?
Vieira’s fighting style is rooted in Brazilian Jiu-Jitsu, Judo, and wrestling. She holds black belts in BJJ and Judo and has won a Brazilian national wrestling title.
7. How tall is Ketlen Vieira and what is her reach?
Ketlen Vieira is 5’8″ (173 cm) tall with a reach of 68.1 inches (173 cm).
8. What is Ketlen Vieira’s current UFC ranking?
As of October 2024, Ketlen Vieira is ranked #3 in the UFC women’s bantamweight division.
9. Has Ketlen Vieira ever fought for a UFC title?
Ketlen Vieira has not fought for a UFC title but has established herself as a top contender in the bantamweight division.
10. What was Ketlen Vieira’s most recent fight?
Her most recent fight was a unanimous decision victory over Macy Chiasson at UFC Fight Night on May 31, 2025, marking her featherweight debut.