is a Japanese professional volleyball player. She plays in the SV.League for PFU BlueCats Ishikawa Kahoku.
Mami's younger sister, Sayaka Yokota is also a professional volleyball player. Both sisters play in the SV.League.
In her second year at Tokai University, she was selected as a member of the All Japan Universiade Team for 2017 VTV International Women's Volleyball Cup in Hai Duong, Vietnam and 2017 FISU World University Games in Taipei.
In 2018, she was a starting player in every match at the 2018 AVC Eastern Zonal Championship, leading the team to victory with 5âÂÂ0 records.
In July 2019, she was also a starting player in every match at the 2019 FISU World University Games. The team finished with the bronze medal which their third consecutive medal win.
In November 2019, Denso Airybees announced that she would join the team in 2020, along with Tamaki Matsui and Satomi Fukudome. She made her starting player debut on October 17, in the opening match against Hisamitsu Springs.
In 2022, she was selected as a member of Japan women's national volleyball team for the first time. She made her starting player debut in VNL match against Poland on June 14. She was also selected for 2022 World Championship.
In 2023, she was selected for 2023 Asian Championship in Thailand where the team won the bronze medal.
In 2024, it was announced that she would leave Denso at the end of 2023âÂÂ24 season. In June the same year, it was announced that she would join Queenseis Kariya along with her sister Sayaka and Ayano Sato.
In May 2025, it was announced that she would leave Queenseis. In June the same year, it was announced that she would join PFU BlueCats Ishikawa Kahoku.