蓝帽子（英语：Bluecap）是一种英国民间传说中虚构的小仙子或幽灵。他们居住在矿山内，并以微小的蓝色火焰形象出现。如果矿工尊重地对待他们，蓝帽子会引导矿工到沉积着丰富矿物的地方。就像诺卡 (妖精)或可伯特，蓝帽子也能在矿山坍塌前，事先警告矿工。他们大部分与盎格鲁苏格兰边界有关连。他们是努力工作的工人，并期望能获得劳工的报酬。能胜任一般的推动者（一种负责推动四轮运货马车的劳工）。蓝帽子的酬劳被人放在矿山中的偏僻角落，他们不能接受任何超过或不及自己应得的报酬。矿工有时会看见闪烁的蓝帽子选择一个奘满煤炭的矿车，以最健壮的精力去推动矿车。另一个相同种类的生物（虽然本质上较少帮助）被称为Cutty Soames 或Old Cutty Soames，因为会切断用来连接矿车的长绳或链条而闻名。

A bluecap is a mythical fairy or ghost in English folklore that inhabits mines and appears as a small blue flame. If miners treat them with respect, the bluecaps lead them to rich deposits of minerals. Like knockers or kobolds, bluecaps can also forewarn miners of cave-ins. They are mostly associated with the Anglo-Scottish borders. They were hard workers and expected to be paid a working man's wages, equal to those of an average putter (a mine worker who pushes the wagons). Their payment was left in a solitary corner of the mine, and they would not accept any more or less than they were owed. The miners would sometimes see the flickering bluecap settle on a full tub of coal, transporting it as though "impelled by the sturdiest sinews". Another being of the same type (though less helpful in nature) was called Cutty Soames or Old Cutty Soames who was known to cut the rope-traces or soams by which the assistant putter was yoked to the tub.