What Is an Apostille?
An Apostille (pronounced uh-poh-STEEL) is a certificate that authenticates the origin of a public document — such as a notarized document, birth certificate, marriage certificate, court order, or diploma — so that it can be legally recognized in a foreign country. The Apostille was created by the 1961 Hague Convention Abolishing the Requirement of Legalisation for Foreign Public Documents (Convention 12).
How This List Is Maintained
Every entry is drawn from the official HCCH Status Table for Convention 12. Our system checks the HCCH source monthly and updates this page when any country's status changes — a new accession, a change in in-force date, a formal objection, or a withdrawal. Countries with an active accession status but no in-force date yet (such as Algeria and Viet Nam in 2026) are flagged as "Pending" until the Convention enters into force for them.
Apostille vs. Embassy Legalization
For any country that is a member of the Hague Convention (129 countries as of 2026), the Apostille is the only authentication required. The destination country agrees in advance to accept it — no consulate involvement, no additional stamps.
For countries that are not members of the Hague Convention (70 countries), a document must go through the full embassy legalization chain: California Secretary of State authentication, then US Department of State authentication, then the destination country's consulate or embassy in the United States. This process takes 3–8 weeks in most cases; some consulates (China, Vietnam, UAE via non-Apostille path) require in-person appointments.
Sending documents to Thailand? Review our Thailand document legalization and Apostille guide for the current destination-specific process.