Courses at the STI are generally open to public officials from the countries listed below.

• Islamic Republic of Afghanistan
• Bangladesh
• Bhutan
• Brunei Darussalam
• Cambodia
• China (includes Hong Kong SAR and Macau SAR)
• Cook Islands
• Democratic Republic of Timor-Leste
• India
• Indonesia
• Iran
• Kiribati
• Republic of Korea
• Lao People’s Democratic Republic
• Malaysia
• Maldives
• Marshall Islands
• Federated States of Micronesia
• Mongolia
• Myanmar
• Nauru
• Nepal
• Niue
• Pakistan
• Palau
• Papua New Guinea
• Philippines
• Republic of Fiji
• Samoa
• Singapore
• Solomon Islands
• Sri Lanka
• Thailand
• Tonga
• Tuvalu
• Vanuatu
• Vietnam