In the population of older adults, anxiety disorders are underdiagnosed and undertreated. Epidemiologic studies have generally found that the prevalence of anxiety disorders declines with age. Recognition of anxiety disorders in older adults is, however, complicated by several age-related factors including the presence of depression, cognitive impairment, and physical illness. A variety of medications have been used to treat anxiety disorders across the life span; however, few studies have evaluated their use specifically in older adults. Choice of medication requires consideration of the effects of aging on safety, tolerability, and adherence. Available data suggest that cognitive and behavioral treatments may be effective for anxiety disorders in older adults. Appropriate medical evaluation and psychosocial interventions are recommended prior to initiating pharmacotherapy. When pharmacologic treatment is warranted, antidepressant medications at low doses may be useful for late-life anxiety disorders; other agents may be considered for augmentation or second-line use in certain types of patients.