Benmore Botanic Garden is a large botanical garden situated in Strath Eachaig at the foot of Beinn Mhòr, on the Cowal peninsula, in Argyll and Bute, Scotland. The gardens are on the west side of the A815 road from Dunoon, between the Holy Loch and Loch Eck, and include footbridges across the River Eachaig. It is one of the sites of Royal Botanic Garden Edinburgh.

Cowal is a rugged peninsula in Argyll and Bute, on the west coast of Scotland. It is bounded on the west by Loch Fyne and on the east by Loch Long and the Firth of Clyde. The Kyles of Bute separate it from Bute to the south.