Chrome OS是由Google所进行的一项轻型电脑操作系统发展计划，发展出专用于互联网的云端操作系统。该操作系统设计计划于2009年7月7日发布，系统植基于Google Chrome及Linux内核。最初设置在小笔电上使用，在2011年上半年正式发表上市“Chrome OS”可以在x86或ARM两种微处理器上运行。

Google声明至2009年底，“Chrome OS”将以“Chromium OS”之名采用开放源代码。虽然“Chrome OS”植基于Linux内核，不过它会使用“一种新的系统”而不会采行目前正在使用中的Linux标准窗口系统，比如X Window系统。

Chrome OS is an operating system designed by Google and based upon the Linux kernel.

Google announced the project in July 2009, conceiving it as an operating system in which both applications and user data reside in the cloud: hence Chrome OS primarily runs web applications. Source code and a public demo came that November. The first Chrome OS laptop, known as a Chromebook, arrived in May 2011. Initial Chromebook shipments from Samsung and Acer occurred in July 2011.