Sarath Ratanavadi

Sarath Ratanavadi
Born (1965-07-12) 12 July 1965
Thailand
EducationChulalongkorn University, University of Southern California
Occupations
  • Businessman
  • engineer
  • investor
  • philanthropist
Years active1994–present
Known forLeadership of Gulf Energy Development

Sarath Ratanavadi (Thai: สารัชถ์ รัตนาวะดี, RTGSSarat Rattanawadee) is a Thai engineer and billionaire businessman who is the founder and chief executive officer of Gulf Development, which operates in sectors such as power generation, telecommunications, and digital infrastructure. He is often referred to as Thailand's "energy king".

As of 2025, Ratanavadi's net worth was estimated at around US$12 billion.