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
United States & Canada
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)
Philippine Baseball League
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