A collective note is a formal diplomatic instrument in which two or more states address a host or third government through one shared text, signed by all participating envoys on the same document. It is distinguished from an identic note (where each state sends a separately signed but textually identical note) and a note verbale (an unsigned third-person communication). Because every signatory commits to the same wording on the same page, the collective note is the strongest written expression of diplomatic unity short of a treaty or joint communiqué.
The form is reserved for situations in which the sending states wish to demonstrate complete solidarity, often when issuing a démarche, protest, demand, or warning. Historically, the great-power Concert of Europe used collective notes to coordinate pressure on smaller states, and the instrument remains codified in standard diplomatic practice manuals such as Satow's Diplomatic Practice. Under the Vienna Convention on Diplomatic Relations (1961), collective notes fall within the ordinary functions of a mission under Article 3, particularly the negotiation and representation functions.
Drafting a collective note is procedurally demanding: each ministry of foreign affairs must approve identical language, signature order is typically alphabetical by state or by precedence of the head of mission, and delivery is usually made jointly by the senior ambassador on behalf of the group. Receiving states sometimes refuse to accept collective notes on the grounds that they imply coercion or a coalition stance — a refusal which itself becomes a diplomatic signal.
In contemporary practice, collective notes are less common than joint statements or EU démarches, but they retain force in bilateral protests, recognition questions, and concerted pressure campaigns where formal written unanimity carries weight.
Example
In 1901, the foreign ministers of eight allied powers delivered a collective note to the Qing government setting the terms that became the Boxer Protocol.