Thongyai Asavanund (), nicknamed Att (), is a Thai business executive in the digital-asset industry. He served as chief executive officer of XSpring Digital and later served as chief executive officer of ERX, the operator of KuCoin Thailand. He was also chairman of the Thai Digital Asset Operators Trade Association (TDO).
Education Thangyai holds a Master of Business Administration degree from the Sasin Graduate Institute of Business Administration of Chulalongkorn University.
Career Thangyai served as chief executive officer of XSpring Digital, an ICO portal approved by Thailand's Securities and Exchange Commission. In 2021, he was involved in the launch of SiriHub, an investment token linked to revenue from the Siri Campus office project. XSpring Digital offered the token through its ICO portal in September that year. The offering sought to raise THB 2.4 billion and was based on revenue from the Siri Campus office project in Bangkok.
In 2024, Thangyai was one of two candidates considered for the position of president of the Stock Exchange of Thailand. Thairath describes him as a key figure in the development of Thailand's digital-asset industry.
In 2025, Thangyai was chief executive officer of ERX, which operated the digital-asset exchange KuCoin Thailand. ERX launched the KuCoin Thailand brand in April 2025.
In April 2026, the Thai Securities and Exchange Commission reported that Thongyai, in his capacity as CEO of ERX, was fined 108,000 baht in connection with ERX's failure to comply with foreign-exchange transaction requirements on three occasions in 2025.
Personal life Thongyai has a son, Ing Asavanund (อิงค์ อัศวานันท์), who is a motorcycle racer and actor under GMMTV.
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