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Abstract: The continued increase in human population has resulted in the rise in the demand as well as the price of edible oils, leading to the search for alternative unconventional sources of oils, particularly in the developing countries. There are hundreds of un- or underexplored plant seeds rich in oil suitable for edible or industrial purposes. Many of them are rich in polyunsaturated essential fatty acids, which establish their utility as “healthy oils.” Some agrowaste products such as rice bran have gained importance as a potential source of edible oil. Genetic modification has paved the way for increasing the oil yields and improving the fatty acid profiles of traditional as well as unconventional oilseeds. Single cell oils are also novel sources of edible oil. Some of these unconventional oils may have excellent potential for medicinal and therapeutic uses, even if their low oil contents do not promote commercial production as edible oils. [Copyright &y& Elsevier]