Alsophis sibonius, the Dominica racer, Dominican racer, or Antilles racer, is a species of snake endemic to the Caribbean island of Dominica.

It feeds on lizards and small rodents.

It rarely bites humans, but may release a foul-smelling (though harmless) cloacal secretion when disturbed.

[2][3] Along with Alsophis manselli from Montserrat, it was previously considered a subspecies of Alsophis antillensis.

This article relating to Dipsadinae is a stub.