This paper argues that the Äiwoo language of the Reef Islands shows what could be characterized as a symmetrical voice system with three voices: an actor voice, an undergoer voice, and a circumstantial voice. Although it differs from better-described symmetrical voice systems in lacking a syntactic pivot, the overall pattern of morphosyntactic alternations, as well as the discourse-pragmatic function, is essentially that of a symmetrical voice system. Moreover, the Äiwoo system combines the syntactic characteristics of a "Philippine-type" symmetrical voice system with the morphological characteristics of an "Indonesian-type" system in a way that appears to be unusual. This analysis, while confirming the status of the Reefs-Santa Cruz language group to which Äiwoo belongs as Austronesian, raises doubts about their current classification as Oceanic, since the symmetrical voice system of Proto-Austronesian is usually assumed to have been lost by the time of Proto-Oceanic. Alternatively, the analysis may be taken to imply that current reconstructions of Proto-Oceanic morphosyntax must be revised. Overall, it adds to the complex picture of voice and transitivity-related systems in Austronesian languages, and to the challenges involved in understanding their historical relationships. AV-take.out SPEC woman NPIV rice LOC sack for LOC child 'The woman will take some rice out of a/the sack for a/the child.' b. A-alis-in ng babae ang bigas sa sako para sa bata. DUR-take.out-PV GEN woman SPEC rice LOC sack for LOC child 'A/the woman will take the rice out of a/the sack for a/the child.' c. A-alis-an ng babae ng bigas ang sako para sa bata. DUR-take.out-LV GEN woman NPIV rice SPEC sack for LOC child 'A/the woman will take some rice out of the sack for a/the child.' d. Ipag-alis ng babae ng bigas sa sako ang bata. CV-take.out GEN woman NPIV rice LOC sack SPEC child 'A/the woman will take some rice out of a/the sack for the child.' (Schachter 1976:494-95; glosses from Ross 2002a:26) cally distinct; that is, they do not promote arguments with different semantic roles in the manner seen with Philippine-type undergoer voices. A symmetrical voice system has been reconstructed to Proto-Austronesian, on the basis that such systems occur synchronically both in several of the Formosan first-order subgroups and in the Malayo-Polynesian subgroup. However, it is generally accepted that the symmetrical voice system had been lost by the time Proto-Malayo-Polynesian developed into Proto-Oceanic, having developed into a system marking transitivity on verbs (Lynch, Ross, and Crowley 2002:61-62; Ross 2012). 3. CLAUSE ALTERNATIONS IN ÄIWOO 3.1 THE ÄIWOO LANGUAGE. The Äiwoo language is spoken in the Main Reef Islands, and in a number of settlements on nearby Santa Cruz Island, in Solomon Islands' Temotu Province. It belongs to the so-called Reefs-Santa Cruz language group, which was a source of considerable controversy in Oceanic linguistics for several decades. The languages were long thought to be of mixed genealogical origin-Austronesian with...