Supanida Katethong

Supanida started playing badminton at age nine and joined the Thailand national junior team in 2015. She won her first international title at the 2014 Singapore International tournament in the women's singles event. In the early of 2015, she won the women's singles title at the Granular Thailand International Challenge tournament. In May 2015, she won double titles at the Smiling Fish International tournament in the women's singles and doubles event. She also won the Sri Lanka International tournament in the women's singles event.

In 2018, Supanida finished runners-up in the Indonesia International and Spanish International. She then claimed two titles in 2019 in the Iran Fajr International and Mongolia International.

Supanida reached her first final in the BWF World Tour at the India Open, losing to her compatriot Busanan Ongbamrungphan.

Supanida opened the 2023 season as a semi-finalist in the India Open, losing to the then world number 1 Akane Yamaguchi. She also reached the semi-finals in the Thailand Masters. In May, Katethong competed at the SEA Games in Cambodia, and won the gold medals in the women's singles and team events. On 16 July, she won her first BWF World Tour title at the 2023 U.S. Open after defeating Gao Fangjie in two straight games. In the next two tournaments, she was defeated by her compatriot Ratchanok Intanon in the second round of the Japan Open, and in the quarter-finals of the Australian Open.

In 2024, Supanida reached three finals, where she won the Thailand Open, and also became finalists in the Thailand and Spain Masters.

In December 2025, Supanida participated in the SEA Games, where she helps the team won the gold medal. She also won the silver medal in the women's singles, losing to her compatriot, Ratchanok in the final.