布罗肯奇景 （德文 Brockengespenst），也称为布罗肯弧（Brocken Bow）或山中鬼影（mountain spectre），是观测者背向太阳产生的阴影，投射在云层表面上被放大的巨大影像。这种现象可以出现在任何一处轻雾弥漫的山腰或云层之上，甚至可以从飞机上观察到。但因为这种现象经常出现在德国哈尔茨山脉低海拔的布罗肯山，并创建成为当地的传说，因此成为这个现象的名称。布罗肯奇景是Johann Silberschlag在1780年首度观测和描述，此后就经常出现在这这地区的文学作品中。

A Brocken spectre (German Brockengespenst), also called Brocken bow or mountain spectre, is the apparently enormous and magnified shadow of an observer, cast upon the upper surfaces of clouds opposite the sun. The phenomenon can appear on any misty mountainside or cloud bank, even when seen from an aeroplane, but the frequent fogs and low-altitude accessibility of the Brocken, a peak in the Harz Mountains in Germany, have created a local legend from which the phenomenon draws its name. The Brocken spectre was observed and described by Johann Silberschlag in 1780, and has since been recorded often in literature about the region.