Anxiety sensitivity (AS) has been defined as the fear of symptoms of anxiety and panic, and is most frequently assessed with the Anxiety Sensitivity Index (Peterson & Reiss, 1987). To investigate the nature and structure of AS in an older sample, data were collected from a sample of 322 adults aged 65 to 97, with mean age 75. Confirmatory factor analysis indicated a hierarchical structure with three group factors (physical concerns, mental incapacitation concerns, and social concerns), as well as a general factor, consistent with previous investigations. Results suggest that the nature and structure of the AS trait in older adults are highly similar to those of younger adults.