Labelgrade

Milk With the Most Protein per Cup

"Milk" covers a huge protein range now — from ultra-filtered dairy concentrated to 13+ grams a cup, down to almond milk that's barely 1 gram. So we ranked every milk in our database — dairy, lactose-free, ultra-filtered, and plant — by protein per serving, with every number pulled live and verified against USDA FoodData Central. Ready-to-drink protein shakes are excluded here; they're a different product, ranked on our best high-protein shakes list.

Short answer: the highest-protein milk here is Dannon — Oikos Triple Zero Greek Vanilla - 5.3oz / 4pk at 15 g of protein per serving (Labelgrade B+, 82/100) — ultra-filtered to concentrate real milk protein, not spiked with powder. Ordinary dairy milk sits near 8 g per cup. Among plant milks, only pea and soy keep pace; almond, oat, and coconut milks carry just 1–4 g and are low-protein by nature.

The ranked list

Ranked by protein per serving, then by overall Labelgrade score. Pulled live from the database, so the grams and grades always match the underlying fact sheets.

# Product Protein Calories Sugar Labelgrade
1 Dannon — Oikos Triple Zero Greek Vanilla - 5.3oz / 4pk 15 g 90 5 g B+ 82
2 Fairlife — Lactose-Free 2% Ultra-Filtered Milk 13 g 120 6 g B+ 80
3 Fairlife — Ultra-Filtered Milk 13 g 120 6 g B+ 80
4 Horizon Organic — DHA Omega-3 Whole Milk 8 g 160 12 g B+ 80
5 Ripple — Unsweetened Original Plant-Based Milk 8 g 70 0 g B 79
6 Lactaid — 100% Lactose Free Whole Milk 8 g 160 12 g B 78
7 Silk — Original Soy Milk 8 g 110 5 g B 77
8 Oatly — Original Oatmilk 3 g 120 7 g B- 74
9 Califia Farms — Unsweetened Almond Milk 2.4 g 84 0 g B 77
10 Blue Diamond — Almond Breeze Chocolate Almondmilk 1 g 100 19 g C+ 67

10 milks graded. Protein and sugar are grams per labeled serving (typically 1 cup / 240 mL). Ready-to-drink protein shakes are excluded.

What wins, and why

The top of this list belongs to ultra-filtered dairy. Filtering real milk through fine membranes concentrates its protein and calcium while removing much of the lactose (sugar) and water — so you get more protein and less sugar per cup than ordinary milk, with no added protein powder. That's why Dannon Oikos Triple Zero Greek Vanilla - 5.3oz / 4pk leads at 15 g while a normal glass of milk delivers about 8 g.

Among plant milks, the gap is enormous and worth knowing before you shop. Ripple Unsweetened Original Plant-Based Milk (8 g) and other pea- and soy-based milks match or approach dairy's 8 g per cup, because pea and soy are genuinely protein-rich. But almond, oat, coconut, and cashew milks are mostly water and a little fat — they carry just 1–4 g of protein per cup no matter how the carton is marketed. If protein is the point, the plant choice is pea or soy, full stop.

How we picked these

Every product here is a milk you pour — dairy (whole, 2%, lactose-free, ultra-filtered) or plant (pea, soy, almond, oat, and others) — ranked strictly by labeled protein per serving, with overall Labelgrade score as the tiebreaker. Ready-to-drink protein shakes are deliberately excluded; reconstituted or bottled shakes are a different decision and live on their own list. All nutrition comes from USDA FoodData Central, pulled live at build time, so this page can't drift out of sync with the fact sheets. Last refreshed 2026-06-02.

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Frequently Asked Questions

Which milk has the most protein per cup?

Dannon Oikos Triple Zero Greek Vanilla - 5.3oz / 4pk tops our ranking at 15 g of protein per serving — ultra-filtration concentrates the natural protein in real milk, so it lands well above the ~8 g per cup in ordinary dairy milk, with no added protein powder. Every milk below is ranked by labeled protein per serving against USDA data.

Does plant milk have as much protein as dairy milk?

Only the high-protein ones. Ripple Unsweetened Original Plant-Based Milk is the plant leader here at 8 g per cup — pea and soy milks match or approach dairy's ~8 g. But almond, oat, coconut, and cashew milks carry just 1–4 g per cup; they are low-protein by nature, regardless of the "milk" on the carton. If protein is the goal, pea or soy is the plant pick.

How does ultra-filtered milk (like Fairlife) have more protein than regular milk?

Ultra-filtration passes milk through fine membranes that concentrate protein and calcium while filtering out much of the sugar (lactose) and water. The result is more protein and less sugar per cup than ordinary milk — without adding any protein powder or isolate. It is real milk protein, just concentrated.

Is high-protein milk worth it over regular milk?

If you are chasing a protein target, yes: ultra-filtered dairy delivers roughly 50–60% more protein per cup than regular milk and usually less sugar, for a modest price premium. If you just want milk for cereal or coffee, ordinary dairy is already a solid ~8 g per cup. The plant milks are where it matters most — choose pea or soy if you want protein, and treat almond and oat as low-protein by design.

What about ready-to-drink protein shakes — do they have more?

Yes, by a lot — bottled protein shakes run 20–42 g per serving because they add concentrated protein. But a shake is a different product than milk you pour on cereal. We rank those separately on our best high-protein shakes list.