Article Three may refer to:

• Article Three of the United States Constitution
• First Amendment to the United States Constitution, which was also known as "Article the Third" or "The third article"
• Article 3 of the Constitution of India, establishment of new states and amendment of existing ones
• Article 3 of the Constitution of Ireland
• Article Three of the Constitution of Puerto Rico
• Article 3, of the North Atlantic Treaty which brought NATO into existence

• Article 3 of the European Convention on Human Rights
• Common Article 3 of the Geneva Convention, 1949

• The Article 3, a musical album by Me'shell Ndegeocello

• Article (disambiguation)