Balallan (Scottish Gaelic: Baile Ailein, Bail' Ailein), meaning "Allan's Town", is a crofting township on Lewis, in the Outer Hebrides, Scotland. Balallan is within the parish of Lochs. The township has the distinction of being the longest village (4 miles measured from end to end) in Lewis, and also in northern Scotland. Straggled along the head of a long sea loch between Arivruach and Laxay, it developed due to a mixture of crofting along the loch shore and fishing. It sits at the head of Loch Erisort. The village formerly had a police house, and currently houses a post office.