Information visibility refers to the degree to which information is available and accessible. Availability focuses on whether people could acquire particular information if they wanted. Accessibility focuses on the effort needed to acquire available information. In scholarly, industry, and popular press, people often conflate information visibility with transparency, yet transparency is generally a valued or ideological concept, whereas visibility is an empirical concept. Growing interest in studying and managing information visibility corresponds with the rapid growth in the use of digital, networked technologies. Yet, interest in information visibility existed prior to the introduction of networked information and communication technologies. Research has historically focused on information visibility as a form of social control and as a tool to increase individual, organizational, and social control and coordination. As a research area, information visibility ties to classic communication and interdisciplinary concerns, as well as core concerns of contemporary society including privacy, surveillance, transparency, accountability, democracy, secrecy, coordination, control, and efficiency. An emerging research area with deep historical roots, information visibility offers a promising avenue for future research.