Protocol

Protocol may refer to:

Sociology and politics

 * Protocol (politics), a formal agreement between nation states
 * Protocol (diplomacy), the etiquette of diplomacy and affairs of state
 * Etiquette, a code of personal behavior

Science and technology

 * Protocol (science), a predefined written procedural method of conducting experiments
 * Medical protocol (disambiguation)

Computing

 * Protocol (object-oriented programming), a common means for unrelated objects to communicate with each other (sometimes also called interfaces)
 * Communication protocol, a defined set of rules and regulations that determine how data is transmitted in telecommunications and computer networking
 * Cryptographic protocol, a protocol for encrypting messages
 * Decentralized network protocol, a protocol for operation of an open source peer-to-peer network where no single entity nor colluding group controls a majority of the network nodes

Music

 * Protocol (album), by Simon Phillips
 * Protocol (band), a British band
 * "Protocol", a song by Gordon Lightfoot from the album Summertime Dream
 * "Protocol", a song by the Vamps from their 2020 album Cherry Blossom

Other uses

 * Protocol (film), a 1984 comedy film
 * Protocol (website), an offshoot of Politico
 * Minutes, also known as protocols, the written record of a meeting
 * Protocol, a news website owned by Capitol News Company