ASPO - Association for the Study of Peak Oil www.peakoil.net, also www.aspo-usa.com
BG - Biomass gassification
BTL - Biomass-to-liquid
CAB -
CERA - Cambridge Energy Research Associates (Chairman Daniel Yergin) www.cera.com
CTL - Coal-to-liquid; see FT
DoE - US Department of Energy www.doe.gov
EIA - Energy Information Administration; division of US DoE www.eia.doe.gov
EROEI - Energy return on energy invested; aka energy profit ratio (EPR)
FIP - Fields in production
FT - Fischer-Tropsch process of converting methane or coal to liquid fuels
GOM or GOMEX - Gulf of Mexico
GTL - Gas-to-liquid; see FT
IEA - International Energy Agency www.iea.org
IHS - IHS Energy (consulting company, parent of CERA)
IOCs - International oil companies
JODI - Joint oil data initiative www.jodidata.org/
LNG - Liquified natural gas, refrigerated for shipping
LPG - Liquified petroleum gas (propane and butane)
LQHC - Low quality hydrocarbons, i.e.tar sands and oil shale
MENA - Middle East and North Africa--includes Algeria, Egypt, Iran, Iraq, Kuwait, Libya, Qatar, Saudi Arabia, and the United Arab Emirates
MER - Maximum effective rate (of production)
MMS - Minerals Management Service; division of US Dept. of the Interior
MRC - Maximum Reservoir Contact
MSM - Mainstream media
NG - Natural gas (mainly methane)
NGL - Natural gas liquids (ethane, propane, butane, isobutane and natural gasoline)
NOCs - National oil companies
OGJ - The Oil & Gas Journal
OOIP - Original oil in place
RUL - Regular unleaded gasoline
SA - Saudi Arabia
SPR - Strategic petroleum reserve
TOD - The Oil Drum www.theoildrum.com
ULSD - Ultra-low sulfur diesel
USGS - United States Geological Survey
URR  - Ultimately recoverable resources
VMT - Vehicle miles traveled
WTI - West Texas intermediate (crude)
Go for it, Bob G!
Replying to the best on topic post, here are my two contribs that I haven't seen yet:

Corporate Average Fuel Economy (CAFE)
Gas Oil Separation Plant (GOSP)

-Ptone