Monreith ([mɒn'ri:θ] / 'mon-REETH'; Scottish Gaelic: Am Monadh Rèidh) is a small seaside village in the Machars, in the historical county of Wigtownshire, Scotland.

[1] A ruined church near Monreith is called "Kirkmaiden-in-Fernis" and was dedicated to St Medan.

[1] Above the church on the cliff is the memorial to Gavin Maxwell the naturalist, and author of Ring of Bright Water, an otter, sculpted in bronze by Penny Wheatley in 1978.

On visits back to the family seat of Monreith House, Maxwell would exercise his tame otter Mijbil on the beach below.

It is the remains of an Iron Age promontory fort overlooking Monreith Bay.