The Seri language contains over 50 kinship terms and represents one of the most highly elaborated kinship systems described to date. This paper discusses Seri kinship terminology and centers around, but is not limited to, the set of obligatory possessed noun stems that are inflected with the following possessive prefixes": "hi-,""ma-," and "a-." After an introductory section, section 2 discusses various kinds of terms that, although used to refer to kinsmen, are special in that they are either unpossessed nouns or nouns derived from verbs. They are not kinship terms insofar as word class is concerned. In section 3, basic kinship terms and their extended meanings are presented, and in section 4, terminology used for deceased persons is presented. (JL)