Ketlen Souza has six losses against six opponents on her MMA record. For a list of Souza's best fights, refer to "Best fights of Ketlen Souza".
On August 2, 2025 Ketlen Souza faced off against Piera Rodriguez in a strawweight bout at age 29. She was coming in with a record of 15-6 (9). Souza lost the fight via 3-round split decision.
On February 15, 2025 Ketlen Souza faced off against Angela Hill in a strawweight bout at age 29. She was coming in with a record of 15-5 (9), and Hill was 40 years old and with a record of 17-14 (6). Souza lost the fight via 3-round split decision.
On June 3, 2023 Ketlen Souza faced off against Karine Silva in a flyweight bout at age 27. She was coming in with a record of 13-4 (9), and Silva was 29 years old and with a record of 15-4 (15). Souza lost the fight via 1st-round submission.
On September 4, 2020 Ketlen Souza faced off against Dayane de Souza Cardoso in a strawweight bout at age 25. She was coming in with a record of 8-3 (7). Souza lost the fight via 1st-round KO.
On May 24, 2019 Ketlen Souza faced off against Ariane Carnelossi in a strawweight bout at age 23. She was coming in with a record of 8-2 (7). Souza lost the fight via 3rd-round TKO.
On March 31, 2018 Ketlen Souza faced off against Fabiulane Melo in a strawweight bout at age 22. She was coming in with a record of 6-1 (5). Souza lost the fight via 1st-round submission.