Supanida Katethong

Supanida Katethong (; born 26 October 1997) is a Thai badminton player. She won the gold medal in the women's singles at the 2023 SEA Games, and also part of Thai winning team at the Games in 2021 and 2023. She is nicknamed as May Sai , so as to not only avoid confusion with another May, which is Ratchanok "May" Intanon, but to also reference her left-handedness.

Supanida also competed for Thailand at the 2024 Summer Olympics.

Career 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.

2023–2025 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.

2026 In March, Supanida won her first World Tour after two years where she beat Putri Kusuma Wardani in two straight games in the final of the Swiss Open.

Achievements

SEA Games Women's singles Year Venue Opponent Score Result Ref

is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tour is divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300, and the BWF Tour Super 100.

Women's singles Year Tournament Level Opponent Score Result Ref 2022 India Open Super 500 Busanan Ongbamrungphan 20–22, 21–19, 13–21 Runner-up 2023 U.S. Open Super 300 Gao Fangjie 21–15, 21–16 Winner 2024 Thailand Masters Super 300 Aya Ohori 21–18, 17–21, 13–21 Runner-up 2024 Spain Masters Super 300 Ratchanok Intanon 12–21, 9–21 Runner-up 2024 Thailand Open Super 500 Han Yue 21–16, 25–23 Winner 2026 Swiss Open Super 300 Putri Kusuma Wardani 21–11, 21–15 Winner

BWF International Challenge/Series (7 titles, 2 runners-up) Women's singles Year Tournament Opponent Score Result Ref 2014 Singapore International Millicent Wiranto 21–11, 22–20 Winner 2015 Thailand International Kim Hyo-min 21–16, 21–16 Winner 2015 Smiling Fish International Sarita Suwannakitborihan 21–14, 21–17 Winner 2015 Sri Lanka International Sabrina Jaquet 17–21, 21–11, 12–6 retired Winner 2018 Indonesia International Aurum Oktavia Winata 19–21, 16–21 Runner-up 2018 Spanish International Michelle Skødstrup 11–21, 15–21 Runner-up 2019 Iran Fajr International Choirunnisa 21–16, 21–13 Winner 2019 Mongolia International Sim Yu-jin 21–19, 19–21, 21–9 Winner

Women's doubles Year Tournament Partner Opponent Score Result Ref 2015 Smiling Fish International Panjarat Pransopon Thidarat Kleebyeesoon Ruethaichanok Laisuan 21–13, 21–8 Winner BWF International Challenge tournament BWF International Series tournament