反被动语态(antipassive voice，常缩写为antip或ap)是一种在及物动词上用以将受词「删去」的语态。它和被动语态多少有相似之处，差别在于被动语态「删去」主词，反被动语态「删去」受词。反被动语态存在于许多澳大利亚原住民语言和美洲原住民语言之中。

反被动语态可见于作通格语言中，在其中，反被动语态被用以「删去」受词并将本来由作格表达的施事者(主词)角色改以通格表达；此外，反被动语态亦可见于相当数量动词同时对主词和受词有人称一致的主宾格语言中，在其中，反被动语态被用以删去动词的受词一致词缀，像马赛语(Maasai language)、科满车语(Comanche language)和卡为罗语(Cahuilla language)等语言皆为此种有反被动语态的(且同时对主词和受词有人称一致的)主宾格语言；此外，相当数量的正动-反动语言(direct–inverse language)亦有反被动语态。

The antipassive voice (abbreviated ANTIP or AP) is a type of grammatical voice that either does not include the object or includes the object in an oblique case. This construction is similar to the passive voice, in that it decreases the verb's valency by one; the passive by deleting the subject and "promoting" the accusative object to a nominative subject, the antipassive by deleting the object and "promoting" the ergative agent to an absolutive subject. The antipassive voice is found in some Mayan, Salishan, Northeast Caucasian, Austronesian, and Australian languages. Only one Amazonian language, Cavineña, has the antipassive.