Pai Rathaya is a Thai theatre designer based in Dublin and Bangkok who has worked as a set and costume designer. Her work spans across theatre, opera and musical theatre. Rathaya graduated with a Bachelor of Landscape Architecture, Chulalongkorn University, in 2013. Master of Dramatic Arts, Chulalongkorn University, in 2017. In 2018, she moved to Dublin to study MFA stage design at the Lir Academy and graduated with distinction.

Designs in 2020 such as As you like it online production for the Lir academy, L’elisir d’amore at BACC in Bangkok, Sassy spy the musical (new musical) and Dance Nation at Sodsai Pantoomkamol Center in Bangkok, Thailand. Also, she is part of the SEEDS Apprentices program 2021, Rough Magic.