Ceramic diversity in the ceremonial center of Chavín de Huantar in the Peruvian highlands is assessed by neutron activation analysis, petrography, and stylistic analysis. These analyses lead to a new interpretation of ceramic production in Chavín between ca. 850 and 200 B.C. Several compositional groups with very different mineralogical paste types are identified. More than 30 percent of the ceramics are nonlocal. Most of these are bottles and fine wares, probably brought to the site as gifts or offerings. At the local level, ceramic production changed over time. A dramatic shift in resource procurement occurred at the end of the first occupation phase, and production became more diversified and intense as the site and its population grew larger.