 Speculations about the nature and function of language in India can be traced to its earliest period. These speculations are multi-faceted in that one detects many different strands of thought regarding language. Some of these speculations are about what one may call the principle of language, but others are about specific languages or specific uses of these languages. One sees speculations regarding the creation of language as well as the role of language in the creation of the universe. Language appears in relation to gods as well as humans, and occupies the entire width of a spectrum from being a divinity herself to being a means used by gods to create and control the world, and ultimately to being a means in the hands of the human beings to achieve their own religious as well as mundane purposes. Gradually, a whole range of questions are raised about all these various aspects of language in the evolving religious and philosophical traditions in India, traditions which shared some common conceptions, but thrived in full-blooded disagreements on major issues. Such disagreements relate to the ontological nature of language, its communicative role, the nature of meaning, and more specifically the nature of word-meaning and sentence-meaning. On the other hand, certain manifestations of language, whether in the form of specific languages like Sanskrit or particular scriptural texts like the Vedas, became topics of contestation between various philosophical and religious traditions. Finally, one must mention the epistemic role and value of language, its ability or inability to provide veridical knowledge about the world. In what follows, I intend to provide a brief account of these diverse developments in ancient, classical and medieval India. (For an approximate chronology of Indian philosophers, see the  supplement.)