Port Logan, formerly Port Nessock, is a small village in the parish of Kirkmaiden in the Rhins of Galloway in Wigtownshire. The Gaelic name is Port Neasaig.

Port Nessock Bay is now all that remains of the western end of a strait that in post-glacial times separated the main part of what is now the Rinns of Galloway from three smaller islands to its south. There