Announced Operations in Forthcoming Contests from NG3K -

CQWW WPX CW Contest  25 - 26 May 2013
RSGB IOTA Contest  27 - 28 July 2013
CQWW DX SSB Contest  26 - 27 October 2013
CQWW DX CW Contest  23 - 24 November 2013

Year Long Contests -

CQ DX Marathon  0000z 01 January - 2359z 31 December Annually (includes 6M)
BCC Frequent Contester  0000z 01 January - 2400z 31 December Annually
DMF Challenge - French Mills  0000z 01 January - 2400z 31 December Annually
HSC Marathon  0000z 01 January - 2400z 31 December Annually
QRP/p Challenge : Km per Watt  0000z 01 January - 2359z 31 December Annually
RMG Annual Cummulative Contest  0000z 01 January - 2400z 31 December Annually (SO/220 MHz & Up)
The United Kingdom CW Table  0000z 01 January - 2400z 31 December Annually (160m-6m)
UBA International Prefix Hunt  0000z 01 January - 2359z 31 December 2013
UBA-SWARL 365 Day Contest  0000z 01 January - 2400z 31 December Annually
Ukraine Open Trophy  01 January - 31 December Annually
World Wide EME Marathon  0000z 01 January - 2400z 31 December Annually

Other Contests & Challenges -

Clipperton DX Club Challenge  0000z 01 January 2011 - 2359z 29 August 2011
CSVHF States Above 50MHz Award/Contest  0001z 01 July 01 2010 - 2359z 30 June 2011
FISTS Four Seasons Activity 2011  0000z 01 January - 2400z 31 December 2011 (160m-70cm)
Six Meter DX Marathon  0000z 07 May - 2400z 07 August 2011 (SO/USB+FM)
UBA International Prefix Hunt  0000z 01 January - 2359z 31 December, 2012

Clubs & Resources -

6D2X Contest Group
Area 51 Contest Club  They are here ... but they don't exist
ARRL Contest-Specific E-Mail Addresses
Bavarian Contest Club - BCC
Black Sea Contest Club - BSCC
Bristol Contest Group
Caribbean Contesting Consortium - CCC  PJ2T - Curacao island
Central German Contest Group - CGCG  Horschlitt, Germany
Central Texas DX & Contest Club - CTDXCC
Central Virginia Contest Club - CVCC
Contest Club Finland - CCF
Contest Club LY1YK  Mazeikiai, Lithuania
Contest Club Ontario - CCO
Contest Group du Québec
ContestRank.com
Contest Registry  Contest stations you can operate from
Contest University 2012  Thursday May 17, 2012 - Crowne Plaza Hotel, Dayton, Ohio
Contester E-mail Addresses
Contesting On-Line Home Page
CQ Magazine's Information Center
CTRI Contest Group - WA1RR
DARC Committee and HF-Contesting  WAE info, and more
DF3CB Contesting
EI5DI Home Page  RSGB and other contests
Florida Contest Group
Frankford Radio Club
KA9FOX Contest / DX Library
KB1GW  Contester's Resource Page
Kuwaiti Contest Club - 9KCC
Lima Alpha Contest Club  Home of LA8W & LN8W
Low Country Contest Club - NU4SC
LU Contesters  Argentina
Luxembourg Contest Group - LX5A  Ranch Moot, WW Loc. JN29xx
Marconi Contest Club - MCC
National Contest Journal (NCJ)
NG3K Contesting Resources and Information
NOA's Ark  The web wite of OH1NOA / OH0NOA
Northern California Contest Club - NCCC
OK1RR's DX & Contesting Page
Potomac Valley Radio Club - PVRC
QRP Contesting  Calendar & Tips by Ken, N2CQ
Radio-Sport.net  Your home for ham radio contest news
RTTY Contesting dot Com
SN0HQ Contest Team
São Paulo Contest Group - SPCG
SKY Contest Club  Herceg-Novi Montenegro Yugoslavia
Slovenia Contest Club - SCC
South East Contest Club - W4AN  Columbus, GA
South Pacific Contest Club  VK3HF Runamuk Farm Contest Station, VIC, Australia
Southern California Contest Club - SCCC
SRARS Contest Web Site  Scottish-Russian ARS
Team Zone 2
The Contesting Compendium
Top of Europe Contesters - TOEC
Ukrainian Contest Club - URCC
Ukrainian Contest Club - URCC  Yes, another link...
UU7J / EM7J Contest Team  Kerch, Ukraine
VHF/UHF Contesting  by Pierre, VE2PIJ
VK Contest Club - VKCC  VK1CC
Winston-Salem Contest Group - W4WS  Winston-Salem, NC
World Contest Station Database
World RTTY Contest Scene
Yankee Clipper Contest Club - YCCC

World Radiosport Team Championship (WRTC) 2014

Contest Calendars -

ARRL Contest Calendar
D.A.R.C. Contest Database
LA9HW's Contest Calendar  List of HF contests by month with complete rules
N2CQ Contest Calendar  QRP contests
R.S.G.B. HF Contest Calendar  Listing only R.S.G.B. contests
R.S.G.B. VHF/UHF Contest Calendar  Listing only R.S.G.B. contests
Six (6m) Club Contests
SM3CER's Contest Calendar  Awesome site for contests, and contest rules
VHF Contest Calendar (W/VE)  by Pierre, VE2PIJ
VHF-UHF Contest Calendar (Worldwide)  by Pierre, VE2PIJ
VK Contest Calendar  by Craig, VK2KDP
WA7BNM's Contest Calendar
50 MHz Contest Calendar  by OZ6OM