Privacy International (PI) is a human rights group formed in 1990 as a watchdog on surveillance and privacy invasions by governments and corporations. PI is based in London, England, and has an office in Washington, D.C. PI has conducted campaigns and research throughout the world on issues ranging from wiretapping and national security, to ID cards, video surveillance, data matching, medical privacy, and freedom of information and expression.

They are a London-based charity. They investigate the secret world of government surveillance and expose the companies enabling it. They litigate to ensure that surveillance is consistent with the rule of law. They advocate for strong national, regional, and international laws that protect privacy. They conduct research to catalyse policy change. They raise awareness about technologies and laws that place privacy at risk, to ensure that the public is informed and engaged. To ensure that this right is universally respected, they strengthen the capacity of their partners in developing countries and work with international organisations to protect the most vulnerable.