OK Kosher Certification

Hechsher of Organized Kashrut Laboratories
Certifying agencyOrganized Kashrut Laboratories
Founded1935
Headquarters391 Troy Ave, Brooklyn, NY 11213 U.S.
Key People
  • Rabbi Shlomo Weinfeld (Chairman, Executive Rabbinical Council)
  • Rabbi Levi Marmulszteyn (Rabbinic Manager)
Websiteok.org

OK Kosher Certification is a major kosher certification agency based out of Brooklyn, NY. It is one of the "Big Five," the five largest kosher certifying agencies in the United States. OK also has a large kosher presence in Asia.