Pork is the most widely produced meat product. Approximately 85 percent of the world's production occurs in five regional groupings. A number of smaller producers are responsible for a significant portion of world trade in pork. These regions and countries can be further grouped into four pork markets based upon commonalities in production, consumption, or trade patterns and government policies. Trade liberalization among industrial market economies is not expected to have a significant impact on pork production and trade at the global level. However, at the regional level, trade liberalization could result in a strengthening of the trend toward a smaller number of large-scale producers worldwide. This could encourage increased trade within regions but trade between several regional market groupings could decline.