Since first described in 1984, nontraumatic pneumothoraces in patients with AIDS has become more common. When compared with spontaneous pneumothorax in the general population, pneumothoraces in patients with AIDS are often complicated by prolonged air leaks as well as higher recurrence rates. Chemical pleurodesis has an important role in the management of these complications. The most experience with chemical pleurodesis uses tetracycline hydrochloride as the sclerosing agent; however, this agent is no longer available. Doxycycline has been used in pleurodesis of malignant effusions, but its use in managing pneumothoraces is limited. We present five patients who have AIDS with a total of seven pneumothoraces. Each patient experienced a persistent air leak. Six of the pneumothoraces were managed successfully with doxycycline. Although the follow-up period was limited, there were no recurrences noted and the only side effect seen was chest pain in four which was easily controlled with narcotics. Doxycycline sclerotherapy can be used effectively for pleurodesis in the management of nontraumatic pneumothorax in the patient with AIDS.