The objectives of this research are to determine the criteria and order of magnitude of the criteria affecting natural rubber prices of Thailand, emphasizing rubber ribbed smoked sheets No.3 prices (RSS3). The study began with the interview on natural rubber prices with the people from the government, public, agricultural, and financial sectors relevant to the Thailand rubber industry. The researcher asked for their suggestions on the significance of criteria affecting RSS3 prices. The questionnaire was used to verify the criteria. Analytical Hierarchy Process (AHP) was the instrument for sorting the order of magnitude of the criteria affecting RSS3 prices. Results indicated seven main criteria that affected RSS3 prices, i.e., the quantity of natural rubber, demand for natural rubber, currency exchange rate, crude oil price, world economic situation, Thailand’s situation, and advanced market speculation. The results reflected the criteria affecting the movement of RSS3 prices, which were beneficial for predicting the tendency of RSS3 prices.

1. K. Kakkana, “Price analysis of Thai rubber in United State of America and Singapore’s markets,” Master of Economic (Economics), Chiang Mai University, Thailand, 2003.
2. S. Jirakorn, “An analysis of export price stabilization scheme of natural rubber in ASEAN,” Master of Science (Agribusiness), Kasetsart University, Thailand, 1988.
3. V. Rosada, “Econometric model of Thai Para rubber,” Kasetsart J. Soc. Sci. Thai., pp. 56 – 65, 1994.
4. S. Waralee, “Analysis of export potential of natural rubber of Thailand,” Master of Economic (Economics), Ramkhamhaeng University, Thailand, 1999.
5. P. Pathairat, “Relationships between rubber spot prices in Thailand and rubber futures prices in the overseas exchanges,” Master of Science (Agribusiness), Kasetsart University, Thailand, 2001.
6. W. Wassana, “Factors affecting and forecast of price of rubber smoke sheet number 3 of Thailand,” Master of Economic (Economics), Ramkhamhaeng University, Thailand, 2004.
7. P. Tananrat, “Factors determining the amount of Thai rubber exports to China. Master of Economic (Economics),” Ramkhamhaeng University, Thailand, 2006.
8. A. K. Aye, “Natural rubber price forcasting in world market,” J. Environ. Sci. Eng., vol. 5, pp. 460-474, 2011.
9. L. S. Thomas, “The analytical hierarchy process,” McGraw-Hill, New York, 1980.

S. Cherdchoongam., V. Rungreunganun, “ An application of analytical hierarchy process for ranking factors affecting of thai natural rubber ribbed smoked sheets no.3 (RSS3) price” International Journal of Technology and Engineering Studies, Vol. 1, no. 2, pp. 42-47, 2015.