Article 19 (stylised ARTICLE 19) is a British international human rights organisation that works to defend and promote freedom of expression and freedom of information worldwide. It was founded in 1987. The organisation takes its name from Article 19 of the Universal Declaration of Human Rights, which states:

Everyone has the right to freedom of opinion and expression; the right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media regardless of frontiers.

In early 2024, Russian authorities designated Article 19 as an "undesirable organization."

ARTICLE 19 monitors threats to free expression around the globe; lobbies governments to adopt laws that conform to international standards of freedom of expression; and drafts legal standards that strengthen media, public broadcasting, free expression, and access to government-held information. The Law Programme also produces legal analysis and critiques of national laws, including media laws. In addition, ARTICLE 19 intervenes in cases of individuals or groups whose rights have been violated; and provides capacity-building support to non-governmental organisations, judges and lawyers, journalists, media owners, media lawyers, public officials and parliamentarians.

ARTICLE 19's work is organised into five regional programmes — Africa, Asia, Europe, Latin America, the Middle East — a law programme, and a digital programme. It has over 100 staff and regional offices in Bangladesh, Brazil, Kenya, Mexico, Myanmar, Senegal, and Tunisia. It works in partnership with nearly 100 organisations in more than 60 countries around the world.

ARTICLE 19 is a founding member of the International Freedom of Expression Exchange (IFEX), a clearinghouse for a global network of non-governmental organisations that monitor free expression violations worldwide. It is also a member of the Tunisia Monitoring Group, a coalition of 21 free expression organisations that lobbied the Tunisian government to improve its human rights record. And it is the coordinator of the International Partnership Group for Azerbaijan (IPGA), a coalition of international organisations working to promote and protect freedom of expression in Azerbaijan.

ARTICLE 19 is a founding member of the Freedom of Information Advocates (FOIA) Network, a global forum that aims to support campaigning, advocacy and fundraising on access to information through the exchange of information, ideas and strategies. The FOIA Network also aims to facilitate the formation of regional or international coalitions to address access to information issues.

Article 19 1. Everyone shall have the right to hold opinions without interference. 2. Everyone shall have the right to freedom of expression; this right shall include freedom to seek, receive and impart information and ideas of all kinds, regardless of frontiers, either orally, in writing or in print, in the form of art, or through any other media of his choice. 3. The exercise of the rights provided for in paragraph 2 of this article carries with it special duties and responsibilities. It may therefore be subject to certain restrictions, but these shall only be such as are provided by law and are necessary: (a) For respect of the rights or reputations of others; (b) For the protection of national security or of public order (ordre public), or of public health or morals