Orapin Chaiyakan was the first Thai woman to be elected to hold a post in the Parliament of Thailand. She was elected to become a member of the House of Representatives of Thailand on June 5, 1949. of the National Assembly of the Kingdom of Thailand.
- Sopchokchai, Orapin. Female Members of Parliament, Women's Political Participation at the National Level, Women's Political Participation in Thailand, TDRI Quarterly Review, Vol. 13, No. 4, December 1998, pp. 11-20
- Iwanaga, Kazuki. Women in Politics in Thailand, Working Paper No. 14, Centre for East and South-East Asian Studies, Lund University, Sweden, 2005