The New Guinea singing dog or New Guinea Highland dog is an ancient (basal) lineage of dog found in the New Guinea Highlands on the island of New Guinea. Once considered to be a separate species in its own right, under the name Canis hallstromi, it is closely related to the Australian dingo. The dog has a reputation for its unique vocalization.

In 1989 the Australian mammalogist Tim Flannery took a photo of a black-and-tan dog in Telefomin District. He wrote that these dogs live with native people in the mountains, and that feral populations lived in the alpine and sub-alpine grasslands of the Star Mountains and the Wharton Range. The photo was published in his book Mammals of New Guinea. In 2012 Australian wilderness-adventure guide Tom Hewett took a photo of a tawny, thick-coated dog in the Puncak Mandala region of West Papua, Indonesia. In 2016 a literature review found no definitive evidence that the founding members of captive populations of New Guinea singing dogs were wild-living animals; they were raised as members of village populations of domestic dogs.