Ambrym, Volcanic island in Malampa Province, Vanuatu.

Ambrym is a roughly triangular volcanic island about 50 km wide, with a 12 km × 8 km caldera at its centre. Two active cones, Benbow and Marum, rise within the caldera; Marum holds a lava lake that vanished after the December 2018 fissure eruption. Dense jungle covers the island outside the settlements and the desert-like summit.

A massive eruption roughly 2000 years ago created the caldera that shapes the island today. In the early 1900s, several volcanic events forced people to leave the island temporarily.

Ambrym's name is said to come from the Ranon phrase "ham rim", meaning "here are yams", though Captain Cook, who allegedly named it in 1774, never landed. The island has its own Austronesian languages, including North Ambrym, Southeast Ambrym, Daakaka and Lonwolwol, each spoken by a few hundred to a few thousand people. Visitors stay in traditional bungalows, as there are no hotels.

Visitors reach the island through two regional airports, one in the southeast and one in the southwest. The drier season offers the most comfortable travel conditions, though weather can change quickly throughout the year.

The western forests, 17,605 hectares with village gardens, form an Important Bird Area recognised by BirdLife International. Among the species recorded there are the Vanuatu megapode, a ground-dwelling bird that builds nest mounds, and the Tanna fruit dove and red-bellied fruit dove.