Morelli was an Italian coachbuilder based in Ferrara. Founded by brothers Gino and Nino Morelli, the company was active in the 1950s and the 1960s, building primarily Aluminum bodies for OSCA. Of the 200 cars produced by OSCA, about 80 were MT4 models. Of the MT4 models, 40 Spiders were built by Morelli. All five OSCA FS 372 Spiders (an updated version of the MT4) were also bodied by Morelli.
Following the Maserati's brothers retirement, the company ceased its coachbuilding activity. It was then taken over by the Morelli's cousin Rolando, and today manufactures joints, bolts and other mechanical components for the car industry.