The exceptional preservation of perishable artifacts on the arid west coast of the Andes has led to an abundance of knowledge on prehispanic textile production. Yet comparatively little of this knowledge is based on highland examples due to their poor preservation in the moist environment of the Andean sierra. Systematic excavations in 2011–2012 at the archaeological complex of Hualcayán in highland Ancash, Peru, revealed surprisingly well-preserved textiles and cordage from four partially looted machay-style tombs. In this article we provide an overview of textile forms, production techniques, and iconography from a sample of 292 textile and cordage fragments, equaling 20% of Hualcayán's assemblage. This work contributes to a better understanding of ancient Andean weaving in general and interregional interaction during the Early Intermediate period and Middle Horizon (ca. AD 1–1000) in particular. Significantly, we document variability in cotton yarn and a general uniformity in camelid yarn and weaving techniques in the overall sample. These findings, in combination with similarities in weaving techniques and style between coastal examples and Hualcayán's fabrics, suggest a coastal–highland relationship.