Disappointment is the feeling of dissatisfaction that follows the failure of expectations to manifest. Disappointment may also refer to: Camp Disappointment, the northernmost campsite of the Lewis and Clark expedition Disappointment Creek (Utukok River), a river in North Slope Borough, Alaska Disappointment Island, one of seven uninhabited islands of the archipelago Auckland Islands Disappointment Islands, a small group of coral atolls Disappointment Mountain, a peak in the Sawtooth Mountains, Minnesota Disappointment Peak (Wyoming), a peak in the Teton Range Mount Disappointment (California), a mountain in the San Gabriel Mountains Mount Disappointment (Australia) in Victoria, Australia "Disappointment", a song by The Cranberries from No Need to Argue See also Cape Disappointment (disambiguation) Disappointed (disambiguation) Great Disappointment The Disappointment, a ballad opera performed in 1762 written by an unknown author under the pseudonym "Andrew Barton" "The Disappointment" (Aphra Behn), a poem by Aphra Behn