Port Bannatyne is a coastal village on the Isle of Bute, Scotland. It is a popular harbour for yachts.
It is approximately 2 miles north of Rothesay and 6 miles from Rhubodach.
Port Banmnatyne is a village of slate and stone on the Scottish Isle of Bute, built two hundred years ago by Lord Bannatyne who lived in the ancient castle that stands just to the north. The substantial houses face the sea around Kames Bay which is mooring for yachts and fishing boats, and there is a small marina and boatyard.