Fibromyalgia (FM) is a prevalent and debilitating condition that contributes to impaired occupational and social functioning and increased disability among affected individuals. The vast majority of people with FM experience persistent sleep disturbances (e.g., onset difficulty, repeated or extended awakenings, nonrestorative sleep) that worsen other FM-related symptoms (e.g., chronic pain, fatigue) and sustain their general dysfunction. Pharmacologic treatments (e.g., antidepressants, hypnotics) may reduce symptoms for some people with FM, but many FM patients display little enduring improvement in their sleep and other FM-related symptoms in response to such agents.