Brief Introduction of Mackenzie Dern
Mackenzie Dern is a highly acclaimed Brazilian-American professional mixed martial artist (MMA) and a decorated Brazilian Jiu-Jitsu (BJJ) practitioner. She is widely recognized for her exceptional grappling prowess, transitioning her elite BJJ skills into the Ultimate Fighting Championship (UFC)’s strawweight division. Born into a family of Jiu-Jitsu legends, Dern has carved out a significant career, achieving multiple world championships in BJJ before making a impactful move to MMA. Her journey showcases a blend of technical mastery, aggressive submission hunting, and a remarkable ability to compete at the highest levels of combat sports, making her a prominent figure in both BJJ and the UFC.
Mackenzie Dern Overview
| Attribute | Detail |
|---|---|
| Full Name | Mackenzie Lynne Dern Santos |
| Date of Birth | March 24, 1993 |
| Age (as of September 2025) | 32 years old |
| Birthplace | Phoenix, Arizona, U.S. |
| Nationality | Brazilian-American |
| Height | 5 ft 4 in (1.63 m) |
| Weight | 115 lb (52 kg) (Strawweight division) |
| Reach | 63 inches (160 cm) |
| Profession | Professional Mixed Martial Artist, Brazilian Jiu-Jitsu Practitioner |
| Division | Strawweight (UFC) |
| Stance | Orthodox |
| Father | Wellington “Megaton” Dias (7th-degree coral belt in BJJ) |
| Stepmother | Luciana Tavares (BJJ Black Belt) |
| Husband | Wesley Santos (Portuguese boyfriend, later married) |
| Daughter | Moa Dern Santos (born June 2019) |
| BJJ Rank | 3rd-degree Black Belt (under Megaton Dias, received early 2024) |
| Net Worth (as of 2025) | Estimated $1 million – $1.5 million (as of Feb 2024 for 2024, May 2025 for 2025) |
| Current UFC Ranking | No. 5 in UFC Women’s Strawweight (as of August 19, 2025) |
Early Life and Education of Mackenzie Dern
Mackenzie Lynne Dern was born on March 24, 1993, in Phoenix, Arizona, U.S.. Her lineage is deeply rooted in Brazilian Jiu-Jitsu royalty, as she is the daughter of the legendary Wellington “Megaton” Dias, a highly decorated grappling competitor and a 7th-degree coral belt in BJJ. Her stepmother, Luciana Tavares, is also a BJJ black belt. From the tender age of three, Dern was immersed in the world of martial arts, beginning her BJJ training under the expert guidance of her father and stepmother at their academy. Instead of having a babysitter, her father took her to the academy, introducing her to the “gentle art” at a very young age.
Dern’s childhood involved frequent travel between Arizona and her father’s native Brazil, exposing her to diverse styles and deepening her connection to the sport. This early and intensive exposure to high-level instruction quickly allowed her to dominate local children’s grappling competitions. By the age of 14, Dern had already begun competing in adult divisions, showcasing exceptional talent and dedication. She also participated in judo tournaments, which helped her sharpen her throwing techniques and integrate them into her BJJ training.
She attended Ironwood High School in Glendale, Arizona, graduating before fully dedicating herself to her burgeoning professional athletic career. Her multilingual upbringing made her fluent in both English and Portuguese, with Portuguese eventually becoming her primary language of thought, especially concerning fighting. This early foundation laid the groundwork for her remarkable achievements in the world of grappling and later in mixed martial arts.
Mackenzie Dern’s Career
Brazilian Jiu-Jitsu Career
Mackenzie Dern’s Brazilian Jiu-Jitsu career is nothing short of legendary. Her journey saw her achieve world championship titles at every belt level as she progressed. She earned her black belt under her father, Megaton Dias, in December 2012, just three months before her 20th birthday. In early 2024, she received her 3rd-degree black belt from her father, further cementing her status among the sport’s elite.
As a black belt, Dern quickly established herself as a dominant force. She holds the unique distinction of being the only woman to win gold medals at all five major IBJJF Gi Championships: the World Championships, European Open, Pan American Championships, Brazilian Nationals, and Asian Open. Her notable BJJ achievements include:
- 1st Place ADCC Submission Wrestling World Championship (2015)
- 1st Place IBJJF World Championships (2015, 2016 – black belt)
- 1st Place IBJJF No-Gi World Championships (2015, Absolute division)
- 1st Place IBJJF Pan American Championships (2015, 2016)
- 1st Place AJP Abu Dhabi World Pro (2015, 2016)
- 1st Place IBJJF European Open (2015, 2016)
Her aggressive, submission-oriented style, characterized by seamless transitions and relentless pressure, made her a formidable opponent on the mats.
Mixed Martial Arts (MMA) Career
After establishing herself as arguably the most accomplished female grappler of her generation, Mackenzie Dern transitioned to mixed martial arts in 2016, with considerable hype surrounding her debut. She forewent an amateur career and made her professional MMA debut on July 22, 2016, at Legacy Fighting Championships 58, securing a unanimous decision victory over Kenia Rosas. She continued to build an undefeated record on the regional scene, including a first-round submission win over future UFC fighter Montana De La Rosa.
Dern signed with Invicta Fighting Championship in November 2017, where she earned a Performance of the Night-winning submission victory. Her impressive performances led her to the Ultimate Fighting Championship (UFC), where she made her promotional debut against Ashley Yoder on March 3, 2018, at UFC 222, winning via split decision.
Early in her UFC career, Dern faced challenges with weight cutting, missing weight on multiple occasions. However, she persevered, dedicating herself to mastering her weight management while continuing to rack up wins. Known for her aggressive submission-hunting style, she quickly made an impact, securing a significant number of submission victories in the UFC.
Following a hiatus for maternity leave in 2019, Dern made a remarkable return to competition, demonstrating her resilience and determination. She has earned multiple “Performance of the Night” and “Fight of the Night” bonuses for her exciting bouts. As of August 19, 2025, she is ranked No. 5 in the UFC women’s strawweight rankings. Her professional MMA record stands at 15 wins and 5 losses, with 8 of her victories coming by submission, showcasing her dominant ground game. She holds the record for most submission wins in UFC Women’s Strawweight division history (5). She is also tied for the third-most wins in UFC Women’s Strawweight division history (10) and tied for second-most finishes (5) in the division.
Mackenzie Dern Personal Life & Family
Mackenzie Dern’s personal life is as intertwined with Brazilian Jiu-Jitsu as her professional career. She is the daughter of BJJ legend Wellington “Megaton” Dias and her stepmother, Luciana Tavares, is also a black belt. Her upbringing was a unique blend of American and Brazilian cultures, making her fluent in both English and Portuguese. She has stated that Portuguese has become her primary language, even dreaming in it, especially regarding her fighting career.
Dern married professional surfer Wesley Santos. The couple welcomed their daughter, Moa Dern Santos, in June 2019. Her return to UFC competition just four months after giving birth, while still breastfeeding, was a testament to her dedication and resilience, a rare feat in high-level MMA. She has openly discussed the challenges and joys of balancing her demanding career with motherhood, often sharing glimpses of her family life on social media. Despite her father initially wanting her to pursue modeling, Dern chose the path of combat sports, though she has expressed reservations about her own daughter following the same physically demanding career.
Her lifestyle reflects a deep commitment to her training and family. She fights out of Huntington Beach, California, and Phoenix, Arizona, where she was born.
Awards and Achievements of Mackenzie Dern
Mackenzie Dern has an impressive list of accolades in both Brazilian Jiu-Jitsu and Mixed Martial Arts:
Brazilian Jiu-Jitsu & Grappling Achievements
- ADCC World Championship Gold Medal (-60kg, 2015 São Paulo)
- IBJJF World Jiu-Jitsu Championship Gold Medal (-59 kg, 2015 California, USA)
- IBJJF No-Gi World Jiu-Jitsu Championship Gold Medal (Absolute, 2015 California, USA)
- Only female to win Gold Medals at Black Belt level at all 5 principal IBJJF Gi Championships (Worlds, Euros, Pan Ams, Brazilian Nationals, Asian Open)
- Multiple IBJJF World Championship titles at every belt level (blue, purple, brown, black)
- IBJJF Pan Jiu-Jitsu Championship Gold Medal (2015, 2016)
- AJP Abu Dhabi World Pro Champion (2015, 2016)
- IBJJF European Open Gold Medal (2015, 2016)
- ADCC North American Championships Gold Medal (-60kg, 2012 San Diego)
Mixed Martial Arts (UFC) Achievements
- UFC Performance of the Night (Four times) vs. Hannah Cifers, Randa Markos, Nina Ansaroff, and Amanda Ribas 2
- UFC Fight of the Night (Three times) vs. Marina Rodriguez, Angela Hill, and Amanda Lemos
- Most submission wins in UFC Women’s Strawweight division history (5)
- Tied for third most wins in UFC Women’s Strawweight division history (10)
- Tied for second most finishes in UFC Women’s Strawweight division history (5)
- UFC.com Awards and UFC Honors Awards
Mackenzie Dern Net Worth and Income
As of 2025, Mackenzie Dern’s estimated net worth is reported to be between $1 million and $1.5 million. This wealth is primarily accumulated through her highly successful careers in both Brazilian Jiu-Jitsu and Mixed Martial Arts, supplemented by various endorsements and sponsorships.
Her income sources include fight purses from her UFC bouts, which have seen significant increases as her career has progressed. For instance, she reportedly earned a lucrative payment of $164,000 for her win over Nina Nunes at UFC Vegas 23. For her fight against Angela Hill at UFC Fight Night: Dern vs. Hill, her base salary was reported to be $80,000, with an estimated total earning of $161,000 including win bonuses and incentive pay. She was also set to earn a staggering $200,000 for her fight against Amanda Lemos at UFC 298 in February 2024. Over her UFC career, she has consistently received post-fight bonuses, with notable earnings like $350,000 from seven UFC post-fight bonuses. According to Inside Sport, her career earnings from UFC alone had reached a minimum of $823,450 by February 2024, excluding undisclosed locker room bonuses.
Beyond fight earnings, Dern has leveraged her prominent personality and success in combat sports to secure endorsement deals with various brands. Her sponsors include War Tribe, Zebra, My Protein, Hayabusa, KillCliff, Murf Electric Bikes, Abu Dhabi Extreme Championship, Kingz Kimonos, Paradigm Sports, San Diego Pardes, and MIKOH. These sponsorships contribute significantly to her overall income, making her one of the well-compensated athletes in her division.
Legacy and Influence
Mackenzie Dern’s legacy is marked by her groundbreaking achievements in Brazilian Jiu-Jitsu and her impactful transition to mixed martial arts. As one of the most decorated female grapplers in history, she elevated the profile of women’s BJJ, inspiring countless individuals to pursue the sport. Her unique accomplishment of winning gold at all five major IBJJF Gi Championships at black belt level solidified her place as an undisputed legend in the grappling world.
In MMA, Dern is celebrated for bringing elite-level BJJ to the UFC’s strawweight division. Her aggressive, submission-heavy fighting style has captivated audiences and demonstrated the effectiveness of high-level grappling in a striking-dominant sport. She has proven that a pure Jiu-Jitsu specialist can not only survive but thrive in the Octagon, influencing a new generation of fighters to develop well-rounded skills.
Beyond her athletic prowess, Dern’s public image is often associated with resilience, discipline, and motherhood. Her decision to return to competition shortly after giving birth to her daughter highlighted her unwavering commitment and shattered conventional expectations for female athletes, particularly mothers, in high-stakes sports. She is seen as an advocate for women in combat sports, balancing her personal life with the demands of an elite athletic career. Her fluency in both English and Portuguese and her strong ties to both American and Brazilian cultures also make her a bridge between these communities in the martial arts world.
Interesting Facts about Mackenzie Dern
- Mackenzie Dern began training in Brazilian Jiu-Jitsu at the age of three, learning from her father, Wellington “Megaton” Dias, and stepmother, Luciana Tavares, both BJJ black belts.
- She achieved her BJJ black belt before her 20th birthday, a remarkable feat for any practitioner.
- Dern is the only female Jiu-Jitsu competitor to have won Gold Medals, at Black Belt level, at each of the 5 principal/highest ranking IBJJF Gi Championships.
- She is fluent in both English and Portuguese, and has stated that Portuguese is her primary language, especially for thoughts related to fighting.
- Prior to her full-time MMA career, she was a professional BJJ competitor, renowned for her innovative and aggressive style, often favoring leg locks and toe holds.
- Dern returned to UFC competition just four months after giving birth to her daughter, Moa, and was still breastfeeding during her fight camp, showcasing incredible dedication.
- Her father, Megaton Dias, initially encouraged her to pursue modeling due to her appearance, but Dern chose the path of professional fighting.
- She has trained with several renowned coaches throughout her career, including her father, Royler Gracie, and Letícia Ribeiro.
- Despite her grappling background, she has continuously worked to improve her striking, evolving into a true mixed martial artist.
- Dern has received a 3rd-degree black belt in Brazilian Jiu-Jitsu from her father in early 2024, further solidifying her mastery.
Controversies
Throughout her MMA career, Mackenzie Dern has faced some controversies, primarily related to weight cutting issues early in her UFC tenure. During her fight against Amanda Cooper at UFC 224 in May 2018, Dern weighed in at 123 pounds, which was 7 pounds over the strawweight non-title fight limit of 116 pounds. As a consequence, the bout proceeded at a catchweight, and Dern was fined 30% of her purse. This was not an isolated incident; she also missed weight by 2.8 lbs for a Legacy FC fight against Montana De La Rosa and by four pounds for an LFA 6 bout against Katherine Roy, leading to a forfeiture of 20% of her purse.
These repeated weight misses drew criticism and generated headlines, casting a shadow on her otherwise stellar grappling reputation. However, Dern openly addressed these challenges and has since shown significant improvement in her weight management, demonstrating her commitment to her professional responsibilities within the UFC. While these instances were notable, they have not significantly derailed her career, as she has continued to compete at a high level and earn significant victories in the strawweight division.
Social Media Presence
Mackenzie Dern maintains an active and engaging presence across various social media platforms, connecting with her global fanbase. Her accounts provide insights into her training, fight preparations, family life, and endorsements.
- Instagram: Mackenzie Dern frequently shares photos and videos from her training sessions, daily life, and family moments. Her Instagram is a primary platform for updates on her career and personal life. (Specific follower count not retrieved in current search, but generally in the millions for top UFC fighters).
- Twitter: While less visually oriented than Instagram, her Twitter account is used for fight announcements, promotional content, and occasional interactions with fans. (Specific follower count not retrieved).
- YouTube: Although she might not host her own channel, Mackenzie Dern is a popular subject on numerous MMA and BJJ YouTube channels, which feature fight highlights, interviews, and documentary-style content about her career and lifestyle.
Her online presence reinforces her image as a dedicated athlete and a loving mother, allowing fans to follow her journey both inside and outside the octagon.
Final Words about Mackenzie Dern
Mackenzie Dern stands as a towering figure in the world of combat sports, having seamlessly transitioned from a Brazilian Jiu-Jitsu prodigy to a formidable mixed martial artist in the UFC. Her journey from the mats of her father’s academy at age three to becoming a top-ranked UFC strawweight fighter is a testament to her inherent talent, relentless dedication, and unwavering fighting spirit.
Currently ranked among the elite in the UFC’s strawweight division, Dern continues to evolve, constantly refining her striking while maintaining her unparalleled grappling prowess. Her recent fight history, including a significant submission win over Amanda Ribas in January 2025, showcases her ongoing development and determination to reach the pinnacle of her sport. Her commitment to her career, even through the challenges of motherhood and past controversies, has solidified her legacy as an inspiring and influential figure for athletes worldwide.
Looking ahead, Mackenzie Dern’s future in both MMA and grappling remains bright. She announced her return to competitive grappling in 2024, accepting an invitation to the ADCC World Championships before competing in a superfight at the Craig Jones Invitational, indicating her continued passion for pure submission arts. Her blend of technical brilliance, aggressive fight style, and inspiring personal journey ensures that Mackenzie Dern will continue to be a compelling force and a source of inspiration for years to come. Whether in the Octagon or on the grappling mats, her pursuit of excellence continues to captivate and motivate.