Chemical analyses of sunflower and safflower seeds, the hulled seed, and the hulls and oils have been made. The 28 samples of sunflower seed, representing four varieties grown at seven locations, contained an average of 29% oil which was composed chiefly (51 to 68%) of linoleic acid glycerides. The eight varieties of safflower seeds grown at Huntley, Montana, contained an average of 33% oil, with an average content of 78% linoleic glycerides. Data on the amounts of ash, nitrogen, sugar, as well as oil, are presented for the whole seeds and their fractions.