The Arab's Mouth is a 1990 play by Ann-Marie MacDonald which she later revised to create Belle Moral, at which point most of the Arabic references were cut. The title refers to a shape found on a stone by the central character—a circle or zero. First staged at the Factory Theatre in Toronto, MacDonald lightly revised the play for publication, at which point it was staged at Theatre Kingston in Kingston, Ontario. It is now out of print, having been superseded by Belle Moral.