Oil palm (Elaeis guineensis Jacq.) can produce a greater oil yield than other oil plants. This research was conducted to evaluate clones, environment and interaction between genotypes with environment that affected phenotypic traits and estimated stability of oil palm clones. Seven varieties include Azteca Eagle Emerald Nemo Titan Tornado and Deli x Lame, aged 4 years old. These varieties were planted at 2 locations in Southern Thailand including Lamae and Sawee district, Chumphon province. The experiment at each location was designed as completely randomized design with 15 replications. Yield and yield components were collected during October 2018 - September 2019. All data were analyzed using combined analysis to test the significance of G x E interaction. Furthermore, the stability were evaluated by Additive Main Effects and Multiplicative Interaction. Analysis of variations in oil yield found that factors of oil palm varieties are statistically significant (p <0.01) indicating that different oil palm varieties cause different oil production. Environmental factors are statistically significant (p <0.01) indicating that different environments have different influence on oil production. As for the interaction factors between varieties and the environment, there were no statistical differences shows that the oil production of different varieties do not respond to the environment so not necessary to analyze the stability of the oil product characteristics.