Lamachan Hill is a hill in the Minnigaff Hills, a sub-range of the Galloway Hills range, part of the Southern Uplands of Scotland. It is the highest hill of the range, lying 11 kilometres (7 mi) north of Newton Stewart in Dumfries and Galloway.

55°03′43″N 4°27′07″W/55.06184°N 4.45201°W/ 55.06184; -4.45201