Milarrochy Bay is a bay on Loch Lomond. It is near the village of Balmaha.
There are a few houses near the bay. Other bays on the east of Loch Lomond include Cashel Bay and Sallochy Bay. The bay has a visitor centre, where you can pick up leaflets about Loch Lomond and The Trossachs National Park and the surrounding area. There is also a camping and caravanning club site.
The bay is popular with hikers on the West Highland Way.