From OpenStreetMap Foundation

AoA - Articles of Association
AOB - Any other business
AB - Advisory Board
AGM - Annual General Meeting
CoI - Conflict of Interest
CWG - Communication Working Group
DWG - Data Working Group
EWG - Engineering Working Group
F2F - Face-to-face (meeting)
FR - Frederik Ramm (Director/Treasurer/DWG member) - Bio
HL - Heather Leson (Director/Ex MWG member) - Bio
KC - Kate Chapman (Director/Chairperson) - Bio
LC - Local Chapter
LWG - Licensing Working Group
MvE - Martijn van Exel (Ex Director/Ex Secretary/Ex LWG member) - Bio
MM - Mikel Maron (Director/SotM-WG/Ex DWG member) - Bio
MWG - Membership Working Group
NDA - Non-disclosure agreement
OEG - Organised editing guidelines (former "Directed Editing Policy")
OWG - Operations Working Group
PB - Peter Barth (CWG/DWG/EWG member/Ex Director) - Bio
PN - Paul Norman (Director/MWG/OWG/EWG/Ex LWG member) - Bio
SotM - State of the Map conference
SotM WG - State of the Map organising committee