The technology of Egyptian faience was studied in order to characterize the diversity of manufacturing techniques and to understand the sequence of technological development. A survey of 600 Egyptain faience objects from Predynastic to early Roman times was undertakenusing collections at the Ashmolean Museum and the Museum of Fine Arts, Boston. Three different methods of producing glazes and many techniques of body manufacture are described and differentiated by period. Study by optical microscopy revealed temporal differences in glaze morphology and in body characteristics, such as hardness, particle size distribution, porosity, coloration, and the occasional presence of layered body structures. A number of minute samples were destructively analyzed with the scanning electron microscope with energy dispersive x-ray attachment. Laboratory tests aimed at duplicating manufacture were conducted, analyzed, and compared with analyses of the artifacts. See also AATA 20-771.