"Mary Don't You Weep" (alternately titled "O Mary Don't You Weep", "Oh Mary, Don't You Weep, Don't You Mourn", or variations thereof) is a Spiritual that originates from before the American Civil War – thus it is what scholars call a "slave song," "a label that describes their origins among the enslaved," and it contains "coded messages of hope and resistance." It is one of the most important of Negro spirituals. It is listed as number 11823 in the Roud Folk Song Index.