Shepherdia argentea (Silver Buffaloberry or Bull berry, thorny buffaloberry) is a species of Shepherdia, native to central North America from southern Canada (Alberta, Saskatchewan, Manitoba) south in the United States to northern California and New Mexico.

It is a deciduous shrub growing to 2-6 m tall. The leaves are arranged in opposite pairs (rarely alternately arranged), 2-6 cm long, oval with a rounded apex, green with a covering of fine silvery, silky hairs, more densely silvery below than above. The flowers are pale yellow, with four sepals and no petals. The fruit is a bright red fleshy drupe 5 mm in diameter; it is edible but with a rather bitter taste.

The berry is one of the mainstays of the diet of the Sharp-tailed Grouse, the provincial bird of Saskatchewan.

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