This book investigates the lexico-grammatical complementarity in language in its construal of person as a semantic system. Given the vast and wide spectrum of resources for expressing distinctions in the assignment of person roles in language, this book presents person-related system networks covering a rich range of semantic features. It also studies the system of person in relation to other major semantic systems instead of regarding it as one isolated component of language parallel to gender, number, case, etc. Systemic features of person are in turn realized by lexicogrammar, whose components, lexis and grammar form a relationship of complementarity in the process of transforming human experience into meaning. Person-related meaning can be either realized by lexical means, i.e. entity, process, quality, or grammatical means, i.e. pronouns, clitics, affixes, zero forms. Besides, such meaning is also found to be realized at some indeterminate areas along the lexis-grammar continuum. A special feature of this book is that it observes the lexicalization and grammaticalization of person based on evidence from a variety of languages. Readers will be presented a comprehensive look into the meaning of person and will be encouraged to reflect on its realization in their own languages.