This paper presents a detailed analysis of the relationship between the right to privacy and the Constitution, examining the theoretical foundations, contemporary challenges, and legal implications of this crucial union in the context of fundamental rights. Privacy, understood as the right to be left alone and to control personal information, has evolved as a cornerstone of democratic and progressive societies. We begin by exploring the roots of the right to privacy in legal and philosophical theories, highlighting how this concept has gained importance in safeguarding human dignity and individual freedom. It also discusses historical and social influences that have shaped the perception of privacy in the context of the formation of modern Constitutions. Subsequently, emerging challenges related to privacy in the digital age are examined. The increasing interconnectivity through information technologies and the proliferation of personal data have posed new challenges to privacy protection, necessitating a critical reevaluation of existing constitutional laws and guarantees. Tensions between the right to privacy and other societal needs, such as national security and crime prevention, are also explored in an attempt to identify a balance that can safeguard both interests. Furthermore, the paper addresses recent legislative and jurisprudential developments regarding the right to privacy, both at the national and international levels. The analysis focuses on crucial court decisions, privacy laws, and legislative debates that have shaped the current legal framework. Finally, potential future developments in the context of the right to privacy and the Constitution are explored, taking into account technological advances, ethical challenges, and emerging societal needs. The aim is to provide a comprehensive and in-depth understanding of how the right to privacy integrates and evolves within the constitutional framework, contributing to a critical understanding of an increasingly relevant topic in contemporary society. Received: 25 December 2023 / Accepted: 25 February 2024 / Published: 23 April 2024