Tamms is a village in Alexander County, Illinois, United States. The population was 724 at the 2000 census. It is part of the Cape Girardeau–Jackson, MO-IL Metropolitan Statistical Area. Tamms is the location of the Tamms Correctional Center, a super-maximum correctional facility operated by the Illinois Department of Corrections that housed the State of Illinois execution chamber.
Tamms is located at 37°14′25″N 89°15′53″W / 37.24028°N 89.26472°W / 37.24028; -89.26472 (37.240207, -89.264822).
According to the United States Census Bureau, the village has a total area of 2.3 square miles (6.1 km²). None of the village's land area is covered by water.