Windows RT 是由微软针对移动设备开发的一款操作系统。它本质上是Windows 8为(ARMv7)架构而开发的定制版本. 在2011年1月于Consumer Electronics Show展示, Windows 8 RT在2012年10月26日与Windows8一并上市,包括三款基于Windows RT的设备, 比如微软的Surface tablet。与Windows 8不同, Windows RT只能被OEM预装在设备上。该系统适用于电池使用时间更长且专为在旅途中使用而设计的轻薄型电脑。 Windows RT 8.1 只能运行内置应用或从 Windows 应用商店下载的应用。

Windows RT is an operating system for mobile devices developed by Microsoft. It is essentially an edition of Windows 8.x built for the 32-bit ARM architecture (ARMv7). First unveiled as a prototype in January 2011 at Consumer Electronics Show, the Windows 8 RT operating system was officially launched alongside Windows 8 on October 26, 2012, with the release of three Windows RT-based devices, including Microsoft's Surface tablet. Unlike Windows 8, Windows RT is only available as pre-loaded software on devices specifically designed for the operating system by OEMs.