★ Major authority
Orthodox Union (OU)OU
New York, NY, USA
🛒 Look for this symbol on packaging
🏅 Globally trusted endorsed by 11 major authorities
Major US certifier with extensive Asia operations (China, Japan, Thailand, India, etc.)
Universally accepted Orthodox Union, certifying many manufacturers across Asia. Bangkok rep Rabbi Moshe Hadad; certified Japan's Mitoku, etc. Included because it is the dominant reliable hechsher operating in-region. Flagship Orthodox Union (OU Kosher), headquartered in New York. Regional OU divisions (Israel, China, etc.) are listed separately.
How to use this safely: a listing here is not an endorsement. Only trust an authority if one you (or your community) already follow recognizes it — see the “endorsed by” tags above. Standards vary by community and by individual ruling, so always confirm with your rav.