The PAT was founded by the Port Authority of Thailand Act 1951 as an autonomous government agency under the jurisdiction of the Ministry of Transportation and Communications.

[2] As of November 2016[update], the latest annual report available, for 2014, contains operational statistics, but no financial information.

[4] The Bangkok Port area is on the east side of the Chao Phraya River in Khlong Toei District occupying over 900 acres (3.6 km2), with jurisdiction of 66 km of riverfront.

Its role as a trade connection with Myanmar, Laos, and the southern provinces of China is expanding and new facilities are being planned 10 km away at the Mae Nam Kok estuary of the Mekong River.

[4] Ranong is on the Kraburi River of the Kra Peninsula, across from Myanmar and near the Indian Ocean coast.

Approved in 2003 as a PAT port, expansion is planned to serve the West Indian Ocean and Andaman Sea areas.