A state visit is the most formal class of bilateral visit in diplomatic protocol, distinguished from official, working, and private visits by the level of ceremony, the rank of the host, and the symbolic political weight attached. It is extended by one head of state to another, typically through an exchange of formal letters of invitation, and is generally limited to a small number per host country each year.
Protocol elements normally include a state arrival ceremony (often featuring a guard of honour, national anthems, and a gun salute), accommodation as the official guest of the host (for example at Buckingham Palace, Blair House in Washington, or the Élysée), a state banquet with toasts, an address to parliament in some traditions, and the laying of a wreath at a national memorial. Substantive business — bilateral talks, joint communiqués, and the signing of agreements — is woven into the schedule, but the visit's primary function is symbolic: signaling the closeness, or strategic upgrading, of a bilateral relationship.
State visits are distinct from official visits (similar ceremony but typically by heads of government rather than heads of state), working visits (focused on substantive talks with minimal ceremony), and private visits (no official program). In republics with a ceremonial presidency, the president hosts on behalf of the state even when policy is set by the prime minister. In monarchies, the sovereign is the host.
The choice of whom to host, when, and in what order is itself a foreign-policy signal. A first state visit early in an administration, or the first state visit hosted by a new monarch, is closely read by analysts as an indication of strategic priorities. Conversely, downgrading a planned state visit to a working visit is a recognized form of diplomatic displeasure short of recalling an ambassador.
Example
In July 2023, South Korean President Yoon Suk-yeol made a state visit to the United States hosted by President Joe Biden, marking the 70th anniversary of the U.S.–ROK alliance.