List of U.S. security clearance terms

Incomplete list of terms used to indicate type, level, or scope of clearance in USA. Better then any I have seen to date.
From Wikipedia, the free encyclopedia, This list is based on a list compiled by a nonauthoritative source on the Internet.

1C or 2C - Federal
3C or 4C - Federal
5C or 6C - Federal
ADP 1
ADP 2
ATOMAL - NATO atomic secrets
CIA Lifestyle Polygraph
COMSEC
C - Confidential
Cosmic - NATO classified material
Cosmic Top Secret - ATOMAL/CTSA
DEA Clearance - Drug Enforcement Administration
DISA - Defense Industrial Security Agency
DISCO - Defense Industrial Security Clearance Office
DOD - U.S. Department of Defense
DOD Lifestyle Polygraph
DOD Secret
DOD - Top Secret SSBI
DOE - U.S. Department of Energy
DOE - Nuclear
DOE - C -- confidential restricted data
DOE - L -- secret restricted data
DOE - Q -- Top secret restricted data
DOJ � NACI -- U.S. Department of Justice
DOJ - Sensitive
DOJ - Secret
DOJ - Top Secret
EBI - Extended Background Investigation
FAA Clearance
FBI
Foreign Government Information
Industrial Clearance
Inactive Clearance
Inactive Top Secret Crypto
Interim Secret
Interim Top Secret
Interim TS / SCI
IRS - MBI
MBI (IRS)
NAC
NASA
NATO
NATO Secret
NSA Lifestyle Polygraph
Position of Public Trust 1C
Position of Public Trust 2C
Position of Public Trust 3C
Position of Public Trust 4C
Position of Public Trust 5C
Position of Public Trust 6C
Polygraph - Counterintelligence
Polygraph - Full Scope / Lifestyle
SAR - Special Access Required
S - Secret
Secret COMSEC
Secret SBI
SIDA - Secured Identification Defense Area
SIOP - war plans
SAP - Special Access Programs
SBI - Special Background Investigation
SBPR - Single Scope Background Investigation (SSBI) Periodic Reinvestigation
SCI - Special Compartmented Intelligence
SI / TK - subcategories of SCI for signals intelligence (SIGINT) work: SI - special intelligence, and TK - talent keyhole, referring to certain imaging and signals intelligence satellites.
SSBI - Single Scope Background Investigation
Technology
TS - Top Secret
Top Secret-Crypto - cryptography
Top Secret-Crypto SCI / TK / G / HCS-P
Top Secret-Final / Crypto / Polygraph
Top Secret-SCI / SBI
Top Secret-SCI / HSC
Top Secret-SCI / SI / TK
Top Secret-SCI / SI / TK / G / B
Top Secret-SCI / SI / TK / G / HCS
Top Secret-SCI / SIOP
Top Secret-SCI / SSBI
Top Secret-SBI-TS/SBI
Top Secret-CISP-TS/CISP
Top Secret-ISSA-TS/ISSA
Top Secret-SAP-TS/SAP
Top Secret-SCI-CI polygraph-TS/SCI/CI Poly
Top Secret-SCI-Full/Scope Lifestyle-TS/SCI Lifestyle Poly
Top Secret-SCI-TS/SCI
Top Secret-SSBI-TS/SSBI
Top Secret-SCI /SSBI / SI / TK
Top Secret-SCI / TK / G / HCS / CI Poly
Top Secret-SCI / TK / G / Lifestyle Poly
Top Secret-SCI / SSBI / CI Poly
Top Secret-SI / TK / B / +
Top Secret-SSBI / CI Poly
Top Secret-SSBI / SCI / TK / G / HCS
Top Secret-SSBI / Lifestyle Poly
Top Secret-SSBI / SCI
Top Secret-SSBI / SCI/ SI / TK / G
Top Secret-SSBI / SCI / SI / TK / G / B / HCS
Top Secret-SSBI / SCI / TK / HCS
Top Secret-SSBI / SCI-B
Top Secret-EBI
Top Secret-SCI - SI / TK / G / HCS / I / P
Top Secret-CISP - TS / CISP
Top Secret-ISSA - TS / ISSA
Top Secret-SAP - TS / SAP
Top Secret-SCI - CI Poly - TS / SCI / CI Poly
Top Secret-SCI - Full / Scope Lifestyle - TS / SCI Lifestyle
Top Secret-SCI - TS / SCI
Top Secret-SSBI - SCI / TK / B / HCS / CI - Poly
Top Secret-SSBI - TS / SSBI
U.S. Citizen
U.S. Customs
US Treasury Clearance
USPS
VR
Yankee Fire
Yankee White

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SSBI stands for Single Scope Background Investigation