Airports Authority of Thailand - State Enterprise operating 5 international airports in Thailand: Bangkok, Chiang Mai, Chiang Rai, Hat Yai and Phuket. www.airportthai.or.th
Communications Authority of Thailand - Responsible for Thailand's postal and international telecommunications systems and services. www.cat.or.th
Post and Telegraph Department - Planning and policy-making body for the country's postal and telecommunications services. www.ptd.go.th