Öz The present paper reports the results of chemical, physical, mineralogical and petrographical methods used for the elemental and technological characterization of a group ancient Iznik ceramics (sherds and kiln wasters) obtained from the sites of Iznik kiln excavation. In the Results, the bulk chemical composition of body, slip and glaze pastes of which provides the recipes regarding the raw material of body, slip and glaze and glaze formula as well, and technological properties such as the porous, glassy and mineral phases, texture and the orientation of grains and aggregates and firing limitation were given