Little Missouri Falls is a waterfall on the upper Little Missouri River in southwest Arkansas within the Ouachita National Forest. In a deep gorge, it forms a sizable stairstep cascade, with the river descending over a series of ledges rather than dropping in one plunge. The site is developed for visitors, with an all-weather gravel road, parking area, restrooms, and a paved trail to observation points. The falls are usually most vigorous in winter and spring, when water flow is strongest.