The Thaksin Express (Thai: รถด่วนพิเศษทักษิณ) is an express train run by the State Railway of Thailand (SRT) between Bangkok and Su-ngai Kolok, a border town in Narathiwat Province and the end of the southern rail line.

The train's passenger cars include 1st- and 2nd-class air conditioned sleepers, 2nd-class fan sleepers, 2nd-class fan seating coaches, 3rd class air conditioned and fan seating coaches, and a dining car.

The train passes through cities and towns along the western edge of the gulf coast of southern Thailand on the upper Malay Peninsula.

These include Nakhon Pathom, Hua Hin, Surat Thani, Hat Yai, Yala, and Su-ngai Kolok.

Train Number 37 Bangkok - Su-ngai Kolok (departure times) Train Number 38 Su-ngai Kolok - Bangkok (departure times) There are about 3-4 second class rakes plus one first class rake for the train between Hat Yai-Su-ngai Kolok.