How to copy tfs groups and permissions from one team project to other in tfs 2015 ?

Is there any way to copy TFS AD groups from one team project to other team project in TFS 2015 ?

No, you cannot copy the groups with the permission settings.

You just need to add the groups to the new team project, them set the permission again.

See below related documents:

• Set up groups for use in TFS deployments
• Add users to a team project or specific team
• Permissions and groups in VSTS and TFS