Published December 25, 2025 · Updated June 18, 2026
This Mediterranean tuna salad skips the mayo completely and lets extra virgin olive oil and bright lemon juice do the work instead. Briny Kalamata olives and sharp red onion bring the flavor, the whole thing comes together in 15 minutes, and at 36g of protein and 8g net carbs per serving it is a genuinely low-carb, diabetic-friendly lunch.
Quick Stats
Why This Recipe Works
Olive oil instead of mayo: Extra virgin olive oil and lemon juice give this tuna salad its creaminess without any mayonnaise. You get heart-healthy monounsaturated fat and bright Mediterranean flavor in the same move.
Protein that keeps you full: At 36g of protein per serving, this salad is built to satisfy. Protein and healthy fat together help steady energy and curb the afternoon slump, with no blood-sugar spike.
Naturally low in carbs: With just 8g net carbs and no added sugar, this fits comfortably into a low-carb or diabetic meal plan. The carbs come from whole vegetables, not a sugary dressing.
Big flavor from simple ingredients: Kalamata olives, red onion, and lemon do the heavy lifting, so a handful of pantry staples turns canned tuna into something that tastes far more special than the effort suggests.
Classic Tuna Salad vs. This Mediterranean No-Mayo Version
| Feature | Classic Tuna Salad | This Recipe |
|---|---|---|
| Dressing | Mayonnaise | Olive oil and lemon |
| Fat type | Processed oils | Monounsaturated olive oil |
| Protein | Varies | 36g per serving |
| Added sugar | Often in the mayo | None |
| Net carbs | Low, but mayo-heavy | 8g, dairy-free |
Here is the full recipe with exact measurements, the olive-oil dressing, and complete nutrition.
Mediterranean Tuna Salad No Mayo | Low Carb
Ingredients
Equipment
Method
- Open the canned tuna and drain thoroughly. Transfer tuna to a medium mixing bowl and press firmly with a fork against the side of the bowl to remove all excess liquid.
- Drizzle 2 tablespoons of extra virgin olive oil evenly over the drained tuna.
- Add 1 tablespoon of fresh lemon juice (or more to taste—start with half a lemon and adjust from there).
- Add the sliced Kalamata olives and thinly sliced red onion to the bowl.
- Sprinkle in the dried oregano, salt, and black pepper.
- Using a fork, gently stir and fluff the mixture until all ingredients are evenly combined and the tuna is lightly coated with the olive oil and lemon dressing. Break up any large chunks of tuna as you mix.
- Taste and adjust seasoning if needed. Add more lemon juice for brightness, salt for depth, or pepper for a little kick.
- Serve immediately in crisp lettuce cups for a low-carb option, or with whole grain crackers (counting the carbs) if desired. Alternatively, enjoy it straight from the bowl or over a bed of mixed greens.
Nutrition
Notes
Tried this recipe?
Let us know how it was!Leaning into bright, no-cook Mediterranean lunches? This tuna salad sits naturally alongside a spread of no-cook mezze or a batch of spicy tuna cucumber boats for an easy low-carb rotation.
Chef Tips for the Best Mediterranean Tuna Salad
Drain the tuna well: Press the tuna firmly against the side of a strainer with a fork to squeeze out the packing liquid. Well-drained tuna lets the olive oil dressing coat the fish instead of pooling at the bottom of the bowl.
Buy good ingredients: With so few components, each one matters. Splurge on quality canned tuna, ideally wild-caught, and a good extra virgin olive oil. The flavor difference is noticeable.
Adjust the lemon to taste: Start with the juice of half a lemon and taste as you go. Some prefer it bright and tangy, others a subtler note, so make it yours.
Let it marry: If you have 10 minutes, let the mixed salad rest in the fridge before serving. The flavors meld and the raw onion mellows.
Tame sharp onion: If raw red onion is too strong, soak the slices in cold water for 5 minutes before adding. That softens the bite while keeping the crunch.
Mind the sodium: Canned tuna and olives both carry salt, so taste before adding any extra. Rinsing the olives and choosing low-sodium tuna keeps the salt in check if you are watching it.
Storage and Serving Suggestions
Refrigerator storage: Keep in an airtight container in the fridge for up to 3 days. The flavor actually improves as it sits, which makes it ideal for meal prep.
Make ahead: Mix a double batch at the start of the week and portion it out for grab-and-go lunches. It travels well and needs no reheating.
Freezer note: This salad is best fresh and does not freeze well, so keep it in the fridge rather than the freezer.
Serving ideas: Spoon it into crisp lettuce cups for an ultra-low-carb option, pile it onto cucumber rounds, or pair it with a small portion of whole-grain crackers if your meal plan has room.
Round out the meal: Tuck it into a fresh lettuce wrap for a light, handheld lunch.
Frequently Asked Questions
Is tuna salad good for diabetics?
This version is built to be. With 36g of protein, healthy olive-oil fat, no added sugar, and just 8g net carbs per serving, it is designed to be gentle on blood sugar. Protein and fat together help slow how quickly any carbs are absorbed.
Is no-mayo tuna salad still creamy?
Yes. Extra virgin olive oil and a squeeze of lemon coat the tuna and give it a rich, dressed texture without mayonnaise. The result is lighter and brighter than a classic mayo-based tuna salad, not dry.
How long does Mediterranean tuna salad last?
Stored airtight in the refrigerator, it keeps well for up to 3 days, and the flavor deepens over the first day. It does not freeze well, so keep it chilled rather than frozen.
Can I make this tuna salad ahead for meal prep?
Absolutely. It is a strong meal-prep option, since it holds for 3 days and needs no reheating. Mix a double batch and portion it into containers for quick lunches through the week.
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Build a whole Mediterranean spread around this tuna salad with easy, no-cook mezze ideas.
A creamy, no-cook, low-carb lunch for the days you want something other than tuna.
Once you make tuna salad the Mediterranean way, the mayo version starts to feel heavy by comparison. It is fast, bright, and endlessly packable, the kind of lunch that makes eating for steady blood sugar feel effortless.
Medical Disclaimer: The nutritional information provided in this article is for informational purposes only. While we strive for accuracy, individual responses to foods vary. Always consult with your healthcare provider or registered dietitian about dietary changes.
