Metamorphism of the tectonic units of Monti Pisani (Northern Apennines). In this paper we summarize the available data concerning the physical conditions of metamorphism experienced by the Monte Serra, S. Maria del Giudice and Tuscan Nappe tectonic Units cropping out in the Monti Pisani area (Norhern Apennines). The data acquired along the last 20 years have been integrated with more recent acquired data as well as data gained from fluid inclusion studies in syn-tectonic veins in the Monte Serra Unit.