[Django]-Should django templates name for each app be unique?

In Django you can use templates with the same names for different apps. But you should add subfolders inside app’s template directory like this:

my_app/templates/my_app/base.html
second_app/templates/second_app/base.html

Now in views you should include app name to the template name:

return render(request, 'my_app/base.html')
return render(request, 'second_app/base.html').