The Socialist Party of Thailand (SPT) was political party

Political party

A political party is a political organization that typically seeks to influence government policy, usually by nominating their own candidates and trying to seat them in political office. Parties participate in electoral campaigns, educational outreach or protest actions...

 in Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

, active in the 1970s. SPT was led by its general secretary Boonsanong Punyodyana.

SPT won 15 out of 269 seats in the 1975

Thai general election, 1975

General elections were held in Thailand on 26 January 1975. The result was a victory for the new Democrat Party, which won 72 of the 269 seats. Voter turnout was 47.2%.-Results:...

 parliamentary elections.

Punyodyana was murdered on February 28, 1976. Around 10,000 people participated in his memorial.

After the Thammasat University massacre on October 6, 1976, many SPT cadres went into exile or joined the Communist Party of Thailand

Communist Party of Thailand

The Communist Party of Thailand - CPT was a Marxist-Leninist, Communist political party in Thailand, active from 1942 until the 1990s. Initially known as Communist Party of Siam the party was founded officially on the 1st of December 1942, although communist activism in the country began as early...

's guerrillas in the border areas with Laos

Laos

Laos Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ Sathalanalat Paxathipatai Paxaxon Lao, officially the Lao People's Democratic Republic, is a landlocked country in Southeast Asia, bordered by Burma and China to the northwest, Vietnam to the east, Cambodia to the south and Thailand to the west...

 in Northern Thailand

Northern Thailand

Thailand's northern region is geographically characterised by multiple mountain ranges which continue from the Shan Hills in bordering Myanmar and Laos, and the river valleys which cut through them...

 and Isan

Isan

Isan is the northeastern region of Thailand. It is located on the Khorat Plateau, bordered by the Mekong River to the north and east, by Cambodia to the southeast and the Prachinburi mountains south of Nakhon Ratchasima...

(Northeastern Thailand). Thus the party was dissolved.