"Ghost of Days Gone By" is a song by American rock band Alter Bridge, released in the United States as the third single from their third album, AB III, on April 18, 2011.

The song's lyrics are about mortality, reminiscing past memories, and "coming to terms with the fact that time will go on.

On March 7, 2011 the band wrote on Facebook "The Ghost Of Days Gone By... haunting North America this spring...

"[3] It was later shown on FMQB that the song would be self-released via EMI to rock radio on April 18, 2011.

[5] Lead vocalist Myles Kennedy said that the song is "a bit of a departure from the theme of the rest of the record."