Windows Server为微软服务器操作系统，可指：

• Windows 2000 Server
• Windows Server 2003
• Windows Server 2008
• Windows Server 2008 R2
• Windows Home Server
• Windows Server 2012
• Windows Server 2016

Windows Server is a brand name for a group of server operating systems released by Microsoft. It includes all Windows operating systems branded "Windows Server", but not any other Microsoft product. The first Windows server edition to be released under that brand was Windows Server 2003. However, the first server edition of Windows was Windows NT 3.1 Advanced Server, followed by Windows NT 3.5 Server, Windows NT 4.0 Server, and Windows 2000 Server; the latter was the first server edition to include Active Directory, DNS Server, DHCP Server, Group Policy, as well as many other popular features used today.