Telefónica, S.A. (Spanish pronunciation: [teleˈfonika]) is a Spanish broadband and telecommunications provider with operations in Europe, Latin America and Asia. Operating globally, it is the fifth largest mobile network provider in the world. The company is the former public monopoly of telecommunications in Spain. Its head office is in the Distrito Telefónica in Madrid.
Telefónica is a supporter of the Hybrid Broadcast Broadband TV (HbbTV) initiative (a consortium of broadcasting and Internet industry companies including SES, OpenTV and Institut für Rundfunktechnik) that is promoting and establishing an open European standard for hybrid set-top boxes for the reception of broadcast TV and broadband multimedia applications with a single user interface, and has run pilot HbbTV services in Spain.