匿名，是一种不具名或使用化名的行为，相对于具真实身份的行为。匿名目的是不想表露自己身份，或者因为多种原因身份/特征不明。

• 笔名投稿
• 不具名选举投票
• 上网玩乐
• 讨论政治正确有问题的话题
• 举报贪官等罪恶
• 恶搞
• 化名逃避警方

Anonymity, adjective "anonymous", is derived from the Greek word ἀνωνυμία, anonymia, meaning "without a name" or "namelessness". In colloquial use, "anonymous" is used to describe situations where the acting person's name is unknown. It can be said as not using your own name, simply. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea here is that a person be non-identifiable, unreachable, or untrackable. Anonymity is seen as a technique, or a way of realizing, certain other values, such as privacy, or liberty.