Ruamrudee International School (RIS, Thai: โรงเรียนร่วมฤดีวิเทศศึกษา, RTGS: Rong Rian Ruam Ruedi Withet Sueksa) is an international school in Min Buri District, Bangkok, Thailand. It is an international school for students in pre-school - grade 12 incorporated under the laws of the Kingdom of Thailand as a non-profit organization. Founded in 1957 by the Redemptorist Fathers of Thailand, RIS serves a population of 1,400 students from around the world. Other campuses include Ruamrudee International School Early Years Campus (Phraya Suren Road, Ramintra-Kanchanapisek area) and Ruamrudee International School Ratchapruek Campus (Bang Kruai-Sai Noi Road, Bang Krang, Nonthaburi).