Protocol may refer to:

Sociology and politics

Protocol (politics) Protocol originally (in Late Middle English, c. 15th century) meant the minutes or logbook taken at a meeting, upon which an agreement was based. The term now commonly refers to an agreement resulting from a meeting, or more generally to any establi ...

, a formal agreement between nation states *

Protocol (diplomacy) In international politics, protocol is the etiquette of diplomacy and affairs of state. It may also refer to an international agreement that supplements or amends a treaty. A protocol is a rule which describes how an activity should be performed ...

, the etiquette of diplomacy and affairs of state *

Etiquette Etiquette () is the set of norms of personal behaviour in polite society, usually occurring in the form of an ethical code of the expected and accepted social behaviours that accord with the conventions and norms observed and practised by a ...

, a code of personal behavior

Science and technology

Protocol (science) In Natural sciences, natural and social science research, a protocol is most commonly a predefined standard operating procedure, procedural method in the design and implementation of an experiment. Protocols are written whenever it is desirable to ...

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

Computing

Protocol (object-oriented programming) In object-oriented programming, an interface or protocol type is a data type describing a set of method signatures, the implementations of which may be provided by multiple classes that are otherwise not necessarily related to each other. A class ...

, a common means for unrelated objects to communicate with each other (sometimes also called ''interfaces'') *

Communication protocol A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics (computer scien ...

, a defined set of rules and regulations that determine how data is transmitted in telecommunications and computer networking **

Cryptographic protocol A security protocol (cryptographic protocol or encryption protocol) is an abstract or concrete protocol that performs a security-related function and applies cryptographic methods, often as sequences of cryptographic primitives. A protocol describe ...

, a protocol for encrypting messages *

Decentralized network protocol Decentralized computing is the allocation of resources, both hardware and software, to each individual workstation, or office location. In contrast, centralized computing exists when the majority of functions are carried out, or obtained from a ...

, a protocol for operation of an

open source Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized sof ...

peer-to-peer Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or workloads between peers. Peers are equally privileged, equipotent participants in the network. They are said to form a peer-to-peer n ...

network where no single entity nor colluding group controls a majority of the network nodes

Music

* ''Protocol'' (album), by Simon Phillips *

Protocol (band) Protocol were a British pop group, who were formed in 2005. They were produced by Mike Peden. They consisted of: * John Pritchard, lead vocals * James McMaster, guitar * Steven Oates, bass * David Malik, keyboards/synthesizers * Dominic Jose ...

, a British band * "Protocol", a song by Gordon Lightfoot from the album ''

Summertime Dream ''Summertime Dream'' is Canadian singer Gordon Lightfoot's twelfth original album, released on the Reprise Records label in 1976. It peaked at #1 on the Canadian ''RPM'' national album chart, and #12 on the US ''Billboard'' pop chart. The album m ...

'' * "Protocol", a song by the Vamps from their 2020 album ''

Cherry Blossom A cherry blossom, also known as Japanese cherry or sakura, is a flower of many trees of genus ''Prunus'' or ''Prunus'' subg. ''Cerasus''. They are common species in East Asia, including China, Korea and especially in Japan. They generally ...

Other uses

* ''Protocol'' (film), a 1984 comedy film *

Protocol (website) ''Politico'' (stylized in all caps), known originally as ''The Politico'', is an American, German-owned political journalism newspaper company based in Arlington County, Virginia, that covers politics and policy in the United States and intern ...

, an offshoot of Politico *

Minutes Minutes, also known as minutes of meeting (abbreviation MoM), protocols or, informally, notes, are the instant written record of a meeting or hearing. They typically describe the events of the meeting and may include a list of attendees, a state ...

, also known as protocols, the written record of a meeting * Protocol, a news website owned by

Capitol News Company Capitol News Company, LLC is an American media company based in Arlington, Virginia, United States. It is a private holding company owned by Robert L. Allbritton. Its primary publication is ''Politico''. In 2020, it launched ''Protocol'', a publ ...

Sociology and politics

Science and technology

Computing

Music

Other uses

See also