信息（英語：Information），又稱情報，是一个严谨的科学术语，其定义不统一，是由它的极端复杂性决定的，獲取信息的主要方法為六何法。
Information can be thought of as the resolution of uncertainty; it is that which answers the question of "What an entity is" and thus defines both its essence and nature of its characteristics.