List of organized baseball leagues

Organized baseball leagues include:

International competition

 * Many international baseball events are coordinated by the baseball division of the World Baseball Softball Confederation, including the World Baseball Classic.

Americas

 * Latin American Series
 * Caribbean Series

Youth Leagues & Major Organizations

 * American Legion Baseball, a youth program, headquartered in Indianapolis, Indiana.
 * Babe Ruth League, a youth program, headquartered in Hamilton, New Jersey.
 * Fellowship of Christian Athletes
 * Little League Baseball, a youth program, headquartered in Williamsport, Pennsylvania.
 * Pony Baseball, a youth program, headquartered in Washington, Pennsylvania.
 * Roy Hobbs Baseball, an over 30 amateur, adult men's baseball organization, headquartered out of Ft. Myers, FL, with national and international Leagues and Teams.

High school

 * In the US, the National Federation of State High School Associations (NFHS) and each state association governs the play of baseball at the high school level. The Federated Christian Athletic Association (FCAA) and state Christian associations oversee the play of baseball at the private Christian School level. Note, however, that a substantial number of Christian schools choose instead to join their state's general athletic association if the organization's rules allow it.

Baseball for People with Disabilities

 * Alternative Baseball, United States

Amateur baseball

 * Abalone League, United States
 * Ligue de Baseball Élite du Québec, Canada
 * New Brunswick Senior Baseball League, Canada
 * Nova Scotia Senior Baseball League, Canada
 * National Adult Baseball Association, United States
 * All-American Amateur Baseball Association, United States
 * National Amateur Baseball Federation, United States

College baseball

 * NCAA conferences: Division I, Division II, Division III, and the College World Series (Div. I, Div. II, Div. III)
 * NAIA conferences, including the NAIA Baseball World Series
 * National Club Baseball Association (NCBA) conferences
 * National Junior College Athletic Association (NJCAA) conferences
 * List of Collegiate Summer Baseball Leagues

Town Team Baseball
Townball is a popular tradition in the Upper Midwest, with grassroots support at the local level.

Professional baseball

 * Major League Baseball (MLB) in the United States and Canada, made up of two component leagues;
 * National League
 * American League
 * Minor League Baseball (MiLB) in the United States and Canada, comprising several levels and multiple component leagues;
 * Triple-A
 * International League
 * Pacific Coast League
 * Double-A
 * Eastern League
 * Southern League
 * Texas League
 * High-A
 * Midwest League
 * Northwest League
 * South Atlantic League
 * Single-A
 * California League
 * Carolina League
 * Florida State League
 * Rookie
 * Arizona Complex League
 * Florida Complex League
 * Fall baseball
 * Arizona Fall League
 * Independent baseball leagues in the United States and Canada
 * American Association of Professional Baseball
 * Atlantic League of Professional Baseball
 * Empire Professional Baseball League
 * Frontier League
 * Pioneer League
 * Pecos League
 * United Shore Professional Baseball League

Instructional Leagues

 * California Winter League*

Latin America

 * Campeonato Brasileiro de Beisebol (CBB), Brazil
 * Colombian Professional Baseball League (LPB), Colombia
 * Cuban Elite League (LEB), Cuba
 * Cuban National Series (SNB), Cuba
 * Curaçao Professional Baseball League (CPB), Curaçao
 * Dominican Professional Baseball League (LIDOM), Dominican Republic
 * Dominican Summer League (rookie), Dominican Republic
 * Mexican Pacific League (LMP), Mexico
 * Mexican League (LMB), Mexico
 * Liga Norte de México, Mexico
 * Mexican Academy League, Mexico
 * Nicaraguan Professional Baseball League (LNBP), Nicaragua
 * Panamanian Professional Baseball League (LPBP or Probeis), Panama
 * Liga de Béisbol Profesional Roberto Clemente (LBPRC), Puerto Rico
 * Venezuelan Professional Baseball League (LVBP), Venezuela
 * Venezuelan Major League (LMBP), Venezuela

Defunct Leagues

 * Federal League defunct since 1915, in the United States
 * Union Association
 * Negro league baseball, defunct since 1958, in the United States
 * All-American Girls Professional Baseball League, defunct since 1954, in the United States
 * Canadian Baseball League
 * Cuban League*
 * Venezuelan Summer League
 * North Country Baseball League
 * Pacific Association of Professional Baseball Clubs

Asia

 * Asia Series
 * Asia Winter Baseball League

Japan

 * Nippon Professional Baseball (NPB)
 * Central League (major)
 * Pacific League (major)
 * Eastern League (minor)
 * Western League (minor)
 * Japanese Baseball League (Former League of Central League and Pacific League)
 * Shikoku Island League Plus (Independent)
 * Baseball Challenge League (Independent)
 * Kansai Independent Baseball League (defunct)
 * Japan Women's Baseball League (Women's)

South Korea

 * KBO League (major)
 * KBO Futures League (minor)
 * Gyeonggi Challenge Baseball League (Independent)
 * Korea Women's Baseball League (Women's)

Taiwan

 * Chinese Professional Baseball League (CPBL, major)
 * Taiwan Major League (TML, major, defunct)
 * Popcorn League (semi-professional)

China

 * China National Baseball League
 * China Baseball League (CBL), China (defunct)

Philippines

 * 1United Philippines
 * Baseball Philippines (defunct)
 * Liga Baseball Philippines
 * Philippine Baseball League (defunct)
 * UAAP Baseball Championship

Other

 * Iran Baseball Championship, Iran
 * Malaysian All-Star League Baseball, Malaysia, Brunei, Indonesia

Defunct Leagues

 * Israel Baseball League

Europe

 * European Champions Cup, Europe's first-tier continental competition
 * European Confederation Cup, Europe's second-tier continental competition
 * European Federation Cup, Europe's third-tier continental competition
 * Baseball-Bundesliga, Austria
 * Croatian Baseball League, Croatia
 * Czech Baseball Extraliga, Czech Republic
 * Interlyga, Estonia, Latvia, Lithuania, Belarus, Russia
 * Baseball Finnish Championship Series, Finland
 * Division Élite, France
 * Baseball-Bundesliga, Germany
 * Greek Baseball League, Greece
 * Hungarian National Baseball League, Hungary
 * Irish Baseball League, Ireland
 * Italian Baseball League, Italy
 * Latvian Baseball League, Latvia
 * Lithuanian Baseball League, Lithuania
 * Honkbal Hoofdklasse, Netherlands
 * Ekstraliga Baseball, Poland
 * Bałtycka Liga Baseballu, Poland
 * Liga Atlântica de Basebol, Portugal
 * División de Honor de Béisbol, Spain
 * Elitserien, Sweden
 * National Baseball League, United Kingdom

Oceania

 * Australian Baseball League
 * Greater Brisbane League, Australia
 * New South Wales Major League, Australia
 * Palau Major League, Palau