Z简语是许多军事和其他使用莫尔斯电码的组织使用的代码，包括大多数欧洲及北约国家使用的Z简语。

在本条目中枚举出的使用同一Z简语表示问答的方法大多用于军事无线电通信中。

Z Code (like Q Code and X Code) is a set of operating signals used in CW, TTY and RTTY radio communication. There are two sets of Z-codes: one originally developed by Cable & Wireless Ltd. (the Cable & Wireless Service Z-Code) for commercial communications in the early days of wire and radio communications and another independently developed by NATO forces later for military needs and use. The NATO Z Code is still in use today, and is published in the unclassified document ACP-131. There are other sets of codes internally used by Russia's military and other operating agencies. The old C&W Z Codes are not widely used today.