指环瀑布位于湖南省保靖县大峰冲峡谷内，是吕洞山风景区的组成部分。
流水从高山上飞泻而下，把一块厚约2米的巨石冲击出一个直径约3米的圆形大洞，水流穿洞而过，落入山下的深潭中。顺着瀑布往上看去，石洞如同一枚指环套在瀑布上，指环瀑布因此得名。（苏峥嵘）
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