Excavated between 1984 and 1992, the site of a large Roman villa complex at Stanwick, Northamptonshire, produced a significant quantity of sculpted and architectural worked stone. This paper assesses the various aspects of that material, including the petrological sources, and offers a new interpretation. Many items were discovered as post-packing or were otherwise reused within the fabric of the enlarged fourth-century villa, but originally derived from what were probably two earlier monumental structures dated on stylistic grounds to the early third century. The sculpture was initially examined in 1994–95 by Martin Henig and the late Thomas Blagg, whose work, especially on the large number of architectural pieces, has been subsumed into this paper and to whom we owe a debt of gratitude. Supplementary material is available online (https://doi.org/10.1017/S0068113X21000052) and comprises additional figures and tables.