Rice prices provide various information about rice markets. This study estimates relationships between Myanmar and rice exporting countries such as Thailand and Vietnam, using monthly rice prices. The cointegrating rank test is applied to find a long-run relationship and then a Granger causality test is used to determine causal relations among the three countries. This paper found that there is no long-run relationships among the three countries. In addition, we could not find Granger causal relationships from most pairs of prices. Based on the results from cointegratingrank and Granger causality tests, different type of economic shocks are detected and identified in each rice price. With the results, this study implies that international rice prices are independently moved.