Little Si is a one-thousand-five-hundred-seventy-six-foot mountain in Washington on the western edge of the Cascade Range, just east of North Bend. Although named for nearby Mount Si, the higher summit beside it, Little Si is a distinct peak rather than part of that mountain, with its own trailhead and a valley between them. Little Si and Big Si both take their names from local homesteader Josiah "Uncle Si" Merritt. In addition to hiking, Little Si is known as a destination for rock climbing and bouldering.