There are many global leagues formed that host annual paintball tournaments here is a list of the more famous leagues:

U.S. National Leagues
NCPA - (National Collegiate Paintball Association), Nationwide association that sanctions college and high school competition, broadcast on College Sports Television Network in the summers of 2005 and 2006, and Fox College Sports in the summers of 2007, 2008 and 2009.
NPPL - (National Professional Paintball League), Nationwide tournament circuit featuring 7-man format, broadcast on ESPN2 in the spring of 2006
PSP - (Paintball Sports Promotions), Nationwide tournament circuit featuring the X-Ball format. PSP's Professional division is known as the NXL, broadcast on ESPN2 in December, 2004
WPL - (World Paintball League, 3-man league formerly broadcast on UPN) The WPL ceased operations as of April, 2006.

U.S. regional leagues
CFOA - (The Carolina Field Owner's Association), Southeast US
CTS - (Crossroads Tournament Series), Midwest US
APL - (Atlas Paintball League), New Jersey US
GPL - (Global Paintball League)
NEPL - (New England Paintball League), Northeast US
XPSL - (Xtreme Paintball Sports League), West Coast US
SXPL - (Southeastern Xtreme Paintball League), Southeast US
SCXL - (Southern California Xball League)Southern California US
AXBL - (American Extreme Paintball League), Northeast US
MPS - (Midwest Paintball Series), Midwest US

Paintball leagues outside the U.S.
Argentine Paintball Association
BC Tactical - British Columbia Tactical Paintball
CSPO - Canadian Scenario Paintball Operations
Centurio Circuit
CXBL - Canadian X-Ball League
Finnish Paintball Federation
Millennium Series - Pan-European paintball league
Nordic Series - the former European X-Ball League
Nz paintball - New Zealand NZPPL
Paintball Association - United Kingdom
PALS - Paintball-Asia League Series, Asia/Asia Pacific
PSL - Prairie Speedball League - Saskatchewan Canada
AXL - Australian National Tournament Series (Australian Xball League)
NPL - Norwegian Paintball League
MXBALL3 - México X-Ball League Series
TPL - Tactical Paintball League in Calgary Alberta Canada
IPL - Interior Paintball League, BC, Canada
BCPPL - BC Paintball Players League, BC, Canada
MR Series - MR Paintball Series, Alberta, Canada
SPS - Splatters Paintball Series, Manitoba, Canada
OPPL - OPPL, Ontario Paintball Players League, Ontario, Canada
Russian League
German Paintball League - Deutsche Paintball Liga (DPL)
SAPPL - South African Professional Paintball League

Tactical Paintball Leagues in the U.S.
TTPL - TTPL (Tactical-Ten-Paintball-League)
SPPL - Scenario Paintball Players League