Born of Osiris is an American progressive metalcore band formed in 2003 in Palatine, Illinois, a suburb of Chicago.

The band currently consists of drummer Cameron Losch, lead vocalist Ronnie Canizaro, and guitarists Lee McKinney and Nick Rossi.

In September 2011, members Cameron Losch, Joe Buras, and Lee McKinney recorded and mixed the self-titled first release by Virginia band Mind's I. David Darocha has also started his own jewelry line called D A V I.

[6] Cameron Losch, Lee McKinney and former lead guitarist Jason Richardson were all instructors on the music teaching website Bandhappy, which was owned by Matt Halpern, the drummer of Born of Osiris's former labelmate Periphery.

[7] On June 25, 2013, the Sumerian Records YouTube page uploaded a Born of Osiris song entitled "Machine" as well as an album titled Tomorrow We Die Alive, which was released August 20, 2013.

[8][9] They toured across North America on the 2013 Rockstar Mayhem Festival alongside groups like Five Finger Death Punch, Rob Zombie and Machine Head.

[10] Born of Osiris also supported Asking Alexandria on their Breakdown the Walls Tour alongside August Burns Red, Crown the Empire and We Came as Romans.

[11] The band also played on the Monster Energy Stage for the 2014 Vans Warped Tour and headlined in October 2014 to support Tomorrow We Die Alive.

[18] The band played in Europe in September 2016, with Veil of Maya as a co-headliner and with Volumes and Black Crown Initiate joining as support.

The first half of the tour featured Volumes, Oceans Ate Alaska, and Within the Ruins and Fire From the Gods as support.

On February 7, 2019, the band embarked on an approximate one month-long tour to support The Simulation alongside Chelsea Grin, Make Them Suffer and Kingdom of Giants.

[25] On May 7, 2020, former lead guitarist Jason Richardson revealed that, after over nine years of attempting to claim his royalty fees for his work on The Discovery, Sumerian Records had paid him the outstanding debt.

[31][32] On March 1, 2024, longtime keyboardist and backing vocalist Joe Buras announced his departure from the band, citing personal growth and aspirations as his reasons for leaving.