Macy Chiasson Bio
Macy Chiasson, born on July 27, 1991, is an American mixed martial artist who competes in the Ultimate Fighting Championship (UFC). She first rose to national attention as the Women’s Featherweight winner of The Ultimate Fighter 28. She now fights in the women’s Bantamweight division and, as of October 7, 2025, holds the number seven spot in the official UFC women’s bantamweight rankings. Chiasson is known for her finishing ability and trains out of Fortis MMA in Dallas, Texas.
Early Life and Background
Macy Chiasson was born in New Orleans, Louisiana, and grew up in the United States. As a high school student, she was a competitive softball player, an athletic foundation that shaped her early love for sport. Her plans changed when a serious car accident left her bed-ridden for three and a half weeks, and the long recovery inspired her to return to the kind of fitness level she had known on the softball field.
At the age of 19, Chiasson walked into a martial arts gym to take Krav Maga classes and was quickly drawn to the physical aggressiveness and tough mental side of combat sports. After only one year of training, she began teaching Krav Maga herself, but she soon realized that the discipline was not built for competition. That realization pushed her toward mixed martial arts, where she began training under Mushin MMA and Mid City MMA in Louisiana.
Path to MMA
Not long after switching her focus to mixed martial arts, Chiasson began competing professionally. She launched her professional career in 2017 and built an unblemished 2–0 record while fighting for promotions such as Invicta Fighting Championships and Cage Warrior Championship. Her quick start, combined with a brown belt in Brazilian Jiu-Jitsu and a brown belt in Krav Maga, made her an attractive prospect for the UFC’s reality competition series.
In August 2017, it was announced that Chiasson would be one of the fighters featured on The Ultimate Fighter 28. Coach Kelvin Gastelum selected her as the second pick among the featherweight competitors, and she delivered three straight first-round knockouts. She stopped Larissa Pacheco in the quarterfinals, finished Leah Letson in the semifinals, and earned a place in the tournament final against Pannie Kianzad. That run inside the TUF house launched her UFC career.
Macy Chiasson Career
Early Career (2017–2018)
Chiasson’s early professional career unfolded across smaller promotions in 2017, where she put together a 2–0 record. That success earned her a slot on The Ultimate Fighter 28, where she became one of the breakout stars of the season. Her three knockout wins in the tournament established her as a finisher and set the stage for her promotional debut.
UFC Debut and Featherweight Run (2018–2021)
Chiasson made her official UFC debut on November 2, 2018, at The Ultimate Fighter 28 Finale, where she submitted Pannie Kianzad with a rear-naked choke in round two to win the Women’s Featherweight tournament. She followed that with a first-round TKO of Gina Mazany at UFC 235 on March 2, 2019, in her bantamweight debut, and then stepped in on short notice to stop Sarah Moras at UFC Fight Night: Iaquinta vs. Cowboy, a win that earned her the Performance of the Night award.
After a decision loss to Lina Länsberg at UFC on ESPN+ 18 in September 2019, Chiasson bounced back with a unanimous decision win over Shanna Young at UFC Fight Night 167. A scheduled bout with Sijara Eubanks in September 2020 was scrapped after Chiasson withdrew for medical reasons. In 2021, she finally met Marion Reneau at UFC on ESPN 21, winning by unanimous decision, before her fight with Aspen Ladd fell through twice due to injury and weight-cut concerns.
Chiasson moved up to featherweight to face Raquel Pennington at UFC Fight Night 199 in December 2021 but missed the non-title weight limit and lost by guillotine choke in round two. She returned to featherweight in May 2022 and edged Norma Dumont by split decision at UFC 274. A bantamweight return later that year ended in a third-round knockout loss to Irene Aldana at UFC 279.
Bantamweight Comeback (2024–2025)
After a planned January 2024 bout with Ketlen Vieira was cancelled, Chiasson faced Pannie Kianzad in a rematch at UFC Fight Night 239 on March 16, 2024. She submitted Kianzad with a rear-naked choke in round one and picked up another Performance of the Night award. She then stopped Mayra Bueno Silva by doctor-stoppage TKO at UFC 303 in June 2024, earning a third Performance of the Night bonus.
The rescheduled bout with Ketlen Vieira finally took place on May 31, 2025, at UFC on ESPN 68, where it was shifted to a featherweight catchweight after Vieira had weight management issues. Chiasson lost the fight by unanimous decision. On October 4, 2025, at UFC 320, she faced Yana Santos at a bantamweight catchweight and dropped a second straight unanimous decision.
Driving Style and Strengths
Chiasson is a tall, long fighter at 180 centimeters with a 183-centimeter reach, attributes that allow her to control distance on the outside. Her grappling base, built through Brazilian Jiu-Jitsu and a long Krav Maga background, gives her a reliable submission and clinch game. She pairs that ground skill with sharp elbows and accurate striking, which has produced multiple doctor-stoppage and knockout wins inside the UFC cage.
Notable Events and Milestones
Her signature moment came on November 2, 2018, when she submitted Pannie Kianzad to win the TUF 28 Women’s Featherweight tournament. She has since collected three Performance of the Night awards, against Sarah Moras in 2019, Pannie Kianzad in 2024, and Mayra Bueno Silva in 2024. A March 16, 2024, first-round submission of Kianzad stands as one of the more decisive rematches of her career.
Macy Chiasson Career Wins
Across her professional career, Chiasson has built a record of 10 wins against 5 losses, with 1 knockout, 1 submission, and 3 decision victories. Many of her most memorable finishes have come inside the UFC, including a TUF 28 tournament-clinching submission and three Performance of the Night bonuses.
UFC Highlights
Chiasson’s UFC career includes wins over Pannie Kianzad, Gina Mazany, Sarah Moras, Shanna Young, Marion Reneau, Norma Dumont, and Mayra Bueno Silva. Her first UFC win was the second-round rear-naked choke of Kianzad in 2018, and her most recent UFC victory was the doctor-stoppage TKO of Bueno Silva at UFC 303 in June 2024. She has also earned three Performance of the Night awards during her UFC tenure.
Other Wins and Performances
Before joining the UFC, Chiasson compiled a 2–0 record fighting under Invicta Fighting Championships and Cage Warrior Championship, and she added three straight first-round knockouts on the way to the TUF 28 final. She also holds a brown belt in Brazilian Jiu-Jitsu and a brown belt in Krav Maga, credentials that reflect her long martial arts base.
Macy Chiasson Family
Family Background and Racing Lineage
Chiasson was raised in New Orleans, Louisiana, and has spoken about her athletic upbringing through high school softball. Detailed information about her parents and broader family background has not been publicly confirmed.
Personal Life
Chiasson is an open lesbian and is married to flute professor Dr. Hannah Chiasson. The couple resides in Dallas, Texas, where Chiasson trains out of Fortis MMA.
2025 Season Performance
The 2025 season has been a difficult stretch for Chiasson. After missing time with an injury that scrapped her original February booking with Ketlen Vieira, she finally met Vieira at UFC on ESPN 68 on May 31, 2025, in a featherweight catchweight bout and lost by unanimous decision. The result pushed her out of the win column, even though she remained ranked inside the UFC women’s bantamweight top ten.
Chiasson returned to bantamweight to face Yana Santos at UFC 320 on October 4, 2025, but missed the non-title weight limit by 1.5 pounds. The bout went ahead at a catchweight, and Chiasson dropped a second straight unanimous decision. Sitting at number seven in the official UFC women’s bantamweight rankings as of October 7, 2025, she still has time to reset her 2025 campaign with a strong bounce-back performance before the calendar turns.