A typical 1 cup pitted serving of sour cherries contains 1.6 grams of protein (1 g per 100 g), which makes it only a minor source of protein. That covers roughly 3% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Only about 8% of the calories in sour cherries come from protein, so it is more of an energy food than a protein food. It is worth eating for other reasons; the protein it adds to a day is incidental.
Among the 71 fruits in the database, sour cherries ranks 15th by protein per serving, and 681st out of all 796 foods on the site. Set against blueberries, another fruit entry in the database, a serving carries about 0.5 g more protein (blueberries has 1.1 g per 1 cup).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by volume at 155 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Source: USDA FoodData Central #173954 - "Cherries, sour, red, raw" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Sour cherries protein FAQ
How much protein is in sour cherries per 100 g?
Sour cherries has 1 g of protein per 100 g. A typical 1 cup pitted serving (155 g) provides 1.6 g.
Is sour cherries a complete protein?
No. Sour cherries is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
How much of the Daily Value does a serving of sour cherries cover?
A 1 cup pitted serving of sour cherries contains 1.6 g of protein, about 3% of the 50 g reference Daily Value.
Is sour cherries a good source of protein?
Sour cherries is only a minor source of protein, and about 8% of its calories come from protein, which makes it more of an energy food than a protein food. Set against blueberries, another fruit entry in the database, a serving carries about 0.5 g more protein (blueberries has 1.1 g per 1 cup).