Heckletooth Mountain is a 3,682-foot summit in Oregon in the Willamette National Forest, just north of Oregon Route 58. Rising from a forested mountain landscape, it is recognized locally for the distinctive jagged rocks near its upper reaches. Its name dates to the 1870s, when a pioneer settler thought the sharp rocks near the peak resembled the teeth of a hackle, a tool used to process flax. The unusual name preserves a small piece of the vocabulary and everyday labor familiar to early settlers in the region.