JSC

acronym: Johnson Space Center
Found on http://cdiac.ornl.gov/pns/acronyms.html#J

JSC

acronym: Joint Scientific Committee (ICSU, WCRP, and WMO)
Found on http://cdiac.ornl.gov/pns/acronyms.html#J

JSC

Joint Security Control - US organization, subordinate to the JCS responsible for security/codebreaking/deception operations
Found on http://www.secondworldwar.co.uk/glossj.html

JSC

Johnson Space Center (Houston, Texas).
Found on http://www.braeunig.us/space/glossary.htm
No exact match found