| Country: | Scotland |
| Official Name: | Collin |
| Coordinates: | 55.0677°N -3.525°W |
| Unitary Scotland: | Dumfries and Galloway |
| Post Town: | DUMFRIES |
| Postcode District: | DG1/2 |
| Postcode Area: | DG |
| Dial Code: | 01387 |
| Constituency Westminster: | Dumfries and Galloway |
| Constituency Westminster1: | Dumfriesshire, Clydesdale and Tweeddale |
Collin is a small village between Dumfries and Gretna in Dumfries and Galloway, Scotland.[1] It is located on the Lochar Water, and the A75 road. It lies 5.3 km east of Dumfries, and 20 km north-west of Annan. It has a cemetery. Rockhall Tower, a castle once owned by the Grierson baronets, is in Collin.