U.S. cottonseed exports accounted for 17 percent of use between 1965 and 1969. This grew to 50 percent between 1975 and 1979, offsetting declining domestic use. The U.S. share of world cottonseed oil trade exceeded 80 percent in the late 1970's, but has fallen below 50 percent in recent years, partly because of growing South American exports. This paper analyzes trends in U.S. cottonseed oil exports, noting U.S. competitiveness in world markets and government sales assistance programs. The paper also reports the effects of cottonseed, soybean, and palm oil prices on the demand for U.S. cottonseed oil exports and describes the changing importance of competing exporting and importing countries.