A hierarchy of fears refers to a psychological concept that describes a structured arrangement of fears, organized in a hierarchical order of intensity or severity. This concept suggests that individuals may experience a range of fears with varying levels of intensity, and that these fears are organized in a systematic manner.

Within the hierarchy of fears, fears are typically ranked from the least distressing to the most distressing. The concept is often associated with certain therapeutic approaches, such as systematic desensitization, exposure therapy, and cognitive-behavioral therapy.