Natachai Boonprasert (ณัฎฐ์ฐชัย บุญประเศริฐ; born October 1, 2000), nicknamed Dunk (ดัง), is a Thai actor and singer under GMMTV. In 2023, he graduated with a bachelor's degree from the School of Engineering at King Mongkut's Institute of Technology Ladkrabang, majoring in Computer Innovation Engineering.

He made his acting debut in 2021 with a guest role in the series "Bad Buddy" (แค่เพื่อนครับเพื่อน).

Aside his acting and singing career, Dunk owns the clothing brand 'VESPERA' and the bakery 'NAVORI'.