how to change NFS share name as displayed in OSX without reconfiguring NFS server?
This is not possible, as far as I can tell. The answer from patrix will indeed mount the share at a different mount point (though you need to create the mount point), but no matter where you mount it, Finder will still show it by the 'Proper' name. 

You can verify by doing Get Info on the mounted drive in /Volumes/; the "Name &amp; Extension" section will show the custom name you specified, but the name at the top of the window (and in the Finder) will be the actual name of the share's final path component.