Condado de Treviño ("County of Treviño") is a municipality in the province of Burgos, autonomous community of Castile and León, Spain. This municipality and the geographically smaller La Puebla de Arganzón make up the enclave of Treviño. Although the enclave is part of Burgos (and, hence, part of the autonomous community of Castile and León) it is surrounded by the province of Álava, part of the autonomous community of the Basque Country.

As of 2015, the municipality has a population of 1,362.

An abundance of prehistoric remains testify that the Condado de Treviño has been inhabited since ancient times. In pre-Roman times, the Varduls, Caristios and Autrigones all lived here at one time or another, attesting to the region's strategic importance.

In the hamlet of Laño one can still see artificial caves that were inhabited by hermits more than 1500 years ago. The Las Gobas caves preserve inscriptions and drawings of animals.

Treviño, the capital of Condado de Treviño was founded some time between 1151 and 1161 by Navarrese king Sancho VI ("Sancho El Sabio", "Sancho the Wise"). In 1200 it was conquered by Alfonso VIII of Castile.

As a crossroads in the Middle Ages, the city of Treviño had an important Jewish quarter. Another early village was Sáseta on the Camino del Vino y el Pescado, the "road of wine and fish" that connected the Ebro valley to the Cantabrian coast.

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