Anriette Esterhuysen is a human rights defender and computer networking pioneer from South Africa. She has pioneered the use of Internet and Communications Technologies (ICTs) to promote social justice in South Africa and throughout the world, focusing on affordable Internet access. She was the Executive Director of the Association for Progressive Communications from 2000 until April 2017, when she became APC's Director of Policy and Strategy. In November 2019 United Nations Secretary-General António Guterres appointed Esterhuysen to Chair the Internet Governance Forum’s Multistakeholder Advisory Group.