Abstract The regulation, disposal, and risks posed by hazardous waste are global issues. The Basel Convention and the Pollution Release and Transfer Registry were initiated to reduce the trade and to monitor the cradle-to-grave progress of hazardous wastes. We examined the quantities of hazardous wastes internationally transported during the period of 2000 to 2006 by countries that ratified the Basel Convention. Because the United States has not ratified the Convention, we reported data provided by the Environmental Protection Agency. We found that much of the hazardous waste trade flows to and from nations with the technological capacity to process and dispose of these wastes. In addition to the United States, Austria, Belgium, Canada, Denmark, France, Germany, Italy, Mexico, and the Netherlands are major participants in both exporting and importing hazardous wastes. Data issues are discussed.