Cremnophobia (from Latin creno, "cliff") is the fear of precipices or cliffs. Those with this phobia might have experienced falling off a cliff in the past and might have gotten lucky with no more than minor injuries. Others might have seen or heard about other people falling off a cliff and getting killed. Others might have seen the movie scenes about people getting pushed over a cliff in murder scenes, or people jumping off the side of a cliff to commit suicide and seeing pictures of the person who fell with their brains splattered on the rocks or ground below. Some cliffdivers may develop this phobia because of the high injury risk.

Cremnophobic people avoid going to cliffs. They may tremble at the site of cliffs, have difficulty or shortness of breathing, and will do anything to avoid getting close to the edge of a cliff. Psychotherapy is rarely needed because one does not have to be at the edge of a cliff if he does not want to.

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