Top 9 · Updated October 2026

Best Low-Sugar Oat Bar

The 9 lowest-sugar oat bar products on this list range from 2.8 g to 35.3 g of sugar per 100 g. The oat bar with the least sugar per 100 g, ranked using label data. Ties are broken by Nutri-Score. We checked 9 oat bar with complete data.

1

Chewy cinnamon roll oat bars

Bites We Love

a NOVA 4 358 kcal 2.8 g sugar 8.6 g protein 14 g fat

Also: Palm oil free
2

Oat Bar

freeyum honey apple

c 110 kcal 7 g sugar 2 g protein 4.5 g fat
3

Crunchy Oat Bars

Nairn's · 40 g

d NOVA 3 463 kcal 8 g sugar 7.7 g protein 19.1 g fat
4

Salted Caramel Oaty Square

Stoats

b NOVA 4 363 kcal 14 g sugar 6.3 g protein 13 g fat
5

Oat Bar Matcha radpberry

Naturally Pam

d NOVA 3 469 kcal 20 g sugar 11 g protein 27 g fat

Also: No additives
6

Peanut Butter Chocolate Chip Oat Bite

Bobo's

e NOVA 4 432 kcal 24.3 g sugar 8.1 g protein 16.2 g fat

Also: Palm oil free
7

Flapjack Oat Bar Coconut

Fit Spo

d 446 kcal 26 g sugar 6.5 g protein 22 g fat

Also: Vegan · Vegetarian
8

Super foods gluten free oat bar

Happy for

c NOVA 4 360 kcal 28 g sugar 8 g protein 6 g fat
9

Chocolate Oat Bar

Once Upon A Farm

e NOVA 3 412 kcal 35.3 g sugar 2.9 g protein 23.5 g fat

Also: Palm oil free

How we built this list

We ranked all published oat bar on Foodmetria that have a photo and the required nutrition data, using values per 100 g from the product label. Ties are broken by Nutri-Score and by how often shoppers scan the product. Rankings update automatically as label data changes. Read our methodology.

More oat bar rankings

Healthiest Oat Bar by Nutri-Score Highest-Protein Oat Bar Lowest-Calorie Oat Bar All oat bar