what does this symbol mean?
A letter K inside a circle

OK kosher symbol

The kosher symbol of OK Kosher Certification: a bold letter K in a circle, marking products and eateries under its supervision.

How to read it

OK Kosher calls its trademarked symbol the Circle-K: the bold letter K in a circle, used on products and at eateries certified by OK Kosher. The agency was founded in 1935 and operates in 99 countries.

Also searched as: circle K, OK Kosher.

Meat, dairy or neither

Keeping meat and dairy apart is a key principle of kosher law, and certifiers mark which a product is. The pareve and dairy markings page covers the letters used beside kosher symbols.

In US labeling rules

For meat and poultry, the USDA’s Food Safety and Inspection Service allows the word “kosher” only on products prepared under rabbinical supervision.

More certification marks

Sources

Last reviewed September 25, 2026 by Rory Hansen. How we research

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