Please suggest whether windows 2012 server SP3 supports SharePoint 2013?
Yes, Windows Server 2012 with its Service Packs is supported on a SharePoint Server 2013.
- Windows Server 2012 R2 is only supported on a SharePoint Server 2013 Service Pack 1 environment.
- Windows Server 2016 RTM is not supported.
For more details check Hardware and software requirements for SharePoint 2013