The Law uses the terms, Action and Agency in several, significant ways which connect them with modern semiotic theory. In Law one of the main contexts for the idea of Acts is in Speech Acts which have become a major aspect of the philosophy of Language in the twentieth century; to Peirce, as the «father» of modern Semiotics, all thought is action, and thought has meaning to the extent that it has consequences in the world. Agency in law is inseparable from the idea of a Legal Actor, and refers to powers which are conferred by a Principal upon a representator to a Third Party. Legal Agents are mediators in law as signs are mediators of interpreted meaning in semiotic theory and semiotic processes. This collection of papers is a transcultural and transdisciplinary project in law and semiotics by distinguished scholars.