Zetas Vieja Escuela
| Founded | 2014 |
|---|---|
| Founded by | José Guizar Valencia Antonio Salas Perea |
| Founding location | Ciudad Victoria, Tamaulipas |
| Years active | 2014−present |
| Territory | Coahuila, Nuevo León, Tamaulipas, San Luis Potosí, Quintana Roo, Veracruz and Zacatecas |
| Ethnicity | Mexican |
| Criminal activities | Drug trafficking, extortion, kidnapping, murder, oil theft |
| Allies | Gulf Cartel |
| Rivals | Mexico Jalisco New Generation Cartel Cártel del Noreste |
The Zetas Vieja Escuela (English: Old School Zetas) is a Mexican criminal organization that splintered from Los Zetas. It was founded by José Guizar Valencia, alias "Z-43", along with other dissidents of the original organization. The group took the name Vieja Escuela, arguing that they would continue the "original business" of drug trafficking, including the same brutality.