NOM is an acronym for, Norma Oficial Mexicana.  It’s a number that refers to the distiller registration number of the distillery in which the tequila was made. Currently  there are over 1,000 brands produced by about 100 distillers in the tequila region of Mexico.  All bottles are required to carry the NOM, stating the tequila’s distillery of origin. The NOM does not indicate quality or ... more.