I wanted to have a list of all the security conferences around the world for a quick reference so I compiled together a list.

DefCon http://www.defcon.org
BlackHat http://www.blackhat.com/
shmoocon http://www.shmoocon.org/
ToorCon http://www.toorcon.org/
you sh0t the sheriff http://www.ysts.org/
Hack.lu http://hack.lu
WOOTCon http://www.usenix.org/event/woot08/
Source Conferences http://www.sourceconference.com/
InfoSecurity Europe http://www.infosec.co.uk/
SyScan http://www.syscan.org
CONFidence http://confidence.org.pl/
CEICConference http://www.ceicconference.com/
RSA Conference http://www.rsaconference.com/
CanSecWest http://cansecwest.com/
EUSecWest http://eusecwest.com/
PACSec http://pacsec.jp/
BA-Con http://ba-con.com.ar/
Hack in the box http://www.hackinthebox.org/
Clubhack http://clubhack.com/
Xcon http://xcon.xfocus.net/
T2 Conference http://www.t2.fi
LayerOne http://layerone.info/
Owasp Conference http://www.owasp.org
DeepSec Conference https://deepsec.net/
FrHack conference http://www.frhack.org/
Shakacon http://www.shakacon.org/
Secrypt conference http://www.secrypt.org/
HackerHalted Conference
SecTor Conference http://www.sector.ca/
Microsoft Bluehat http://www.microsoft.com/technet/security/bluehat/default.mspx
ReCon http://recon.cx/
Hacker space festival http://www.hackerspace.net
RAID Conference http://www.raid-symposium.org/
Sec-T Conference http://www.sec-t.org/
BruCon http://www.brucon.org
DIMVA Conference http://www.dimva.org
SeaCure Conference http://seacure.it/
ColSec http://www.univ-orleans.fr/lifo/Manifestations/COLSEC
Auscert http://conference.auscert.org.au
RuxCon http://www.ruxcon.org.au/
uCon http://www.ucon-conference.org/
Chaos Communications Congress http://www.ccc.de/
Bellua Cyber Security http://www.bellua.com/bcs/
CISIS Conference http://www.cisis-conference.eu/
ATC Conference http://www.ux.uis.no/
NDSS Conference http://www.isoc.org/isoc/conferences/
EkoParty Conference http://www.ekoparty.com.ar/
No Con Name http://www.noconname.org/
KiwiCon http://www.kiwicon.org/
VNSecon http://conf.vnsecurity.net
EC2nd Conference http://www.ec2nd.org/
IMF Conference http://www.imf-conference.org/
BugCon http://www.bugcon.org/
Cyber Warfare http://www.ccdcoe.org
POC Conference http://www.powerofcommunity.net/
QuahogCon http://quahogcon.org/
NotaCon http://www.notacon.org
PhreakNic http://www.phreaknic.info
PlumberCon http://plumbercon.org/
Internet Security Operations and Intelligence http://isotf.org/isoi7.html