This study examines third country effects on U.S. wheat export performance in Asian countries. An import demand model is developed to analyze the impacts of price competitiveness, exchange rates, and exchange rate volatilities on U.S. wheat market shares. The United States competes with Australia and Canada in the Asian wheat market. Empirical results show that two factors, Australian wheat price and U.S. dollar values against the Asian countries' currencies, have significant effects on U.S. market shares in this region. Furthermore, exchange rate risks between the exporting and importing countries are found to be important.