A typical 1 container serving of greek yogurt (whole milk) contains 15.3 grams of protein (9 g per 100 g), which makes it a very good source of protein. That covers roughly 31% of the 50 g reference Daily Value, so it can anchor a high-protein meal for the day.
Protein accounts for roughly 37% of the calories in greek yogurt (whole milk), making it very protein-dense. The rest comes from fat and carbohydrate, so it adds a solid amount of protein while still carrying real energy - useful when you are eating to a calorie target rather than under one.
Among the 81 dairy foods in the database, greek yogurt (whole milk) ranks 10th by protein per serving, and 242nd out of all 796 foods on the site. Set against sheep milk, another dairy food entry in the database, a serving carries about 0.6 g more protein (sheep milk has 14.7 g per 1 cup).
It is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own. The serving above is counted by piece at 170 g. Because pieces vary, the per-100 g figure is the one to use when comparing this against a food measured a different way.
Source: USDA FoodData Central #171304 - "Yogurt, Greek, plain, whole milk" (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
Greek yogurt (whole milk) protein FAQ
How much protein is in greek yogurt (whole milk) per 100 g?
Greek yogurt (whole milk) has 9 g of protein per 100 g. A typical 1 container serving (170 g) provides 15.3 g.
Is greek yogurt (whole milk) a complete protein?
Yes. Greek yogurt (whole milk) is a complete protein - it supplies all nine essential amino acids in adequate amounts, so it can carry a meal's protein on its own.
How much of the Daily Value does a serving of greek yogurt (whole milk) cover?
A 1 container serving of greek yogurt (whole milk) contains 15.3 g of protein, about 31% of the 50 g reference Daily Value.
Is greek yogurt (whole milk) a good source of protein?
Greek yogurt (whole milk) is a very good source of protein, and about 37% of its calories come from protein, which makes it very protein-dense. Set against sheep milk, another dairy food entry in the database, a serving carries about 0.6 g more protein (sheep milk has 14.7 g per 1 cup).