金水，杀人游戏术语，在杀人游戏或狼人游戏（狼人杀）中被预言家公布身份为民及民以上。

“金水”在杀人类游戏中的应用来源于“金水法则（Goldwater rule）”。

中文名：金水

外文名：Gold water

出处：游戏

来源：金水法则

原文："On occasion psychiatrists are asked for an opinion about an individual who is in the light of public attention or who has disclosed information about himself/herself through public media. In such circumstances, a psychiatrist may share with the public his or her expertise about psychiatric issues in general. However, it is unethical for a psychiatrist to offer a professional opinion unless he or she has conducted an examination and has been granted proper authorization for such a statement"

"The Unconscious of a Conservative: A Special Issue on the Mind of Barry Goldwater."

“揭秘一位保守党人的潜意识：Barry Goldwater内心世界特刊”

其中有对该参议员的心理分析，此后美国心理协会即加入了此道德原则。

此原则没有官方名称，因Barry Goldwater（巴里金水）而得名。