Windows Live Spaces（或称：Windows Live 共享空间；前身：MSN Spaces）是微软的博客和社交网络平台。它是微软live.com旗下的产品，也是MSN Spaces的后续版本。用户可以通过Windows Live Spaces发布网志内容、照片等。同时Windows Live Spaces与Windows Live Messenger有紧密联系，包括更新时在Windows Live Messenger的名片上有自动更新星号、标题、内文与相片预览等。

2010年9月28日，微软宣布停止Windows Live Spaces服务，与WordPress.com合作，并将现有用户的博客账户迁移到WordPress.com网站。

Windows Live Spaces was Microsoft's blogging and social networking platform. The site was originally released in early 2004 as MSN Spaces to compete with other social networking sites, and re-launched in 2006 as a part of a shifting of community services away from the MSN brand. Windows Live Spaces received an estimated 27 million (27,000,000) unique visitors per month as of August 2007. Despite being considered a useful messaging and communication tool, Windows Live Spaces has been criticized as not being as powerful as some of its alternatives. It was shut down in 2011 due to low viewership.