Coylet is a hamlet on Loch Eck, on the Cowal Peninsula, in Argyll and Bute, West of Scotland.

It developed around the Coylet Inn, a coaching inn on the A815 road that leads to Dunoon, the main town on the peninsula.

The name may be derived from Gaelic caol ait, "narrow place".

[2] The 1994 film The Blue Boy is centred around the story of a four-year-old boy drowning in Loch Eck and haunting the Coylet Inn.

[3][4] Starring Emma Thompson and Adrian Dunbar, directed by Paul Murton.