《帝国时代II：国王时代》（英语：Age of Empires II: The Age of Kings，中国大陆译作「帝国时代II：国王时代」，简称《帝国II》，缩写：AOE2、AoK）是一款由全效工作室开发、微软于1999年发行的即时战略游戏，最初支持的平台包括Microsoft Windows及Mac OS操作系统，它是帝国时代系列的第二代游戏产品。2000年，微软发布《国王时代》的资料片《帝国时代II：征服者》。2001年，科乐美发布该游戏的PlayStation 2版本和任天堂DS衍生版本。

Age of Empires II: The Age of Kings is a real-time strategy (RTS) video game developed by Ensemble Studios and published by Microsoft. Released in 1999 for the Microsoft Windows and Macintosh operating systems, it was the second game in the Age of Empires series. An expansion, The Conquerors, was released in 2000. A PlayStation 2 version was released by Konami in 2001, and a Nintendo DS spinoff, Age of Empires: The Age of Kings was developed by Backbone Entertainment in 2006. A Dreamcast port, by Konami, was canceled.