Born of Osiris is an American progressive metalcore band formed in 2003 in Palatine, Illinois, a suburb of Chicago. The band currently consists of lead vocalist Ronnie Canizaro, lead guitarist Lee McKinney, rhythm guitarist/bassist/keyboardist Nick Rossi, and drummer Cameron Losch. Born of Osiris has played at various festivals including the Summer Slaughter Tour and the Music as a Weapon Tour 4.

Progressive metalcore is a fusion of progressive metal and metalcore characterized by highly technical lead guitar, "atmospheric" elements, and complex instrumentation. Some notable practitioners take influence from djent.