  We construct traversable wormholes with anti-de Sitter asymptotics supported
by a phantom field. These wormholes are massless and symmetric with respect to
reflection of the radial coordinate $\eta \to - \eta$. Their circumferential
radius decreases monotonically from radial infinity to their single throat.
Analogous to their asymptotically flat counterparts, these anti-de Sitter
wormholes possess an unstable radial mode.
