The Guyana National Bureau of Standards (GNBS), operating under the Ministry of Tourism Industry and Commerce is a semi-autonomous governmental organization responsible for Standards and Quality in Guyana.

GNBS was established in March 1985, under Act No. 11 of 1984. It has the legal status of a statutory corporation governed by a National Standards Council (NSC) appointed by the Minister of Tourism Industry and Commerce.

The GNBS is a revenue-generating agency funded by the Government of Guyana. It is the only National Standards Body in Guyana. It is also an ISO 9001:2015 certified and ISO/IEC 17025 accredited agency.

The GNBS is headed by an Executive Director and a Deputy Executive Director who work in alignment with the operations of the agency. The Executive Director has the responsibility of overseeing the corporate departments while the Deputy Director oversees the technical departments.