I don't think so - at least if you exclude islands and villages on the mainland not connected to the rest of the road network (Inverie being the only one I'm aware of).

I was contemplating a post-lockdown trip to Shetland and was looking at the ferry times to Papa Stour which made me think of this!

NB 14.5 hours to get to Lerwick from where I live in Scotland and a couple of hours to get from Lerwick to Papa Stour.