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Etiquette in technology, colloquially referred to as netiquette, is a term used to refer to the unofficial code of policies that encourage good behavior on the Internet which is used to regulate respect and polite behavior on social media platforms, online chatting sites, web forums, and other online engagement websites. The rules of etiquette that apply when communicating over the Internet are different from these applied when communicating in person or by audio (such as telephone) or video call. It is a social code that is used in all places where one can interact with other human beings via the Internet, including text messaging, email, online games, Internet forums, chat rooms, and many more. Although social etiquette in real life is ingrained into our social life, netiquette is a fairly recent concept.

It can be a challenge to communicate on the Internet without misunderstandings mainly because input from facial expressions and body language is absent in cyberspace. Therefore, several rules, in an attempt to safeguard against these misunderstandings and to discourage unfriendly behavior, are regularly put in place at many websites, and often enforced by moderation by the website's users or administrators.