Bortolo d'Alvise was a 16th-century Italian scientific instrument maker.
He was a Venetian glassmaker who, thanks to the negotiations by Grand Duke Cosimo I de' Medici (1519 - 1574) with the Venetian Republic, was called to Florence as a crystal-maker. He was documented in Florence as early as September 1569, and along with Jacomo and Alvise Della Luna was one of the finest Venetian glassmakers to settle in Florence.[1] He remained there for about fourteen years, where he introduced new techniques. The inventory of his workshop records reticello (filigree) glass, engraved glass, ice glass, a gilded tray, and weave-pattern vases with handles.