League/tournament clubs

Please let me know about any notable clubs running regular leagues or tournaments, either at a club level or for individual members, that I do not have in this list.

Note: this listing is not necessarily an endorsement of a particular tournament or of their organisational structure.  It is merely an informational posting intended to help you find tournaments that you may enjoy participating in.

NOTE: this club has not been maintained for several years.  Some of these leagues are no longer active.

Club - Team Match - for geographically-based teams

Chess.com Clubs League (open to OTB clubs that have an online presence)

Chess.com Nations League (open to official chess.com clubs of national federations)

World League (open to national teams)

Live Chess World League (open to national teams; a live chess version of World League)

Live Chess Pan-American League (open to Pan-American teams)

European League (open to European national teams)

Asian League (open to Asian national teams)

Eurasian League (open to Eurasian national teams)

Pan-American League (open to national teams from North and South America)

World Cities League (open to city teams)

European Cities League (open to European city teams)

Cities World Cup (open to city teams)

European InterRegio Championship (open to European regional teams)

World Invitational League (an invitational tournament of national and regional teams)

U.S Team Chess League (open to U.S. State teams)

County Championship Council UK and Ireland (open to county teams from the UK and Ireland)

Kazakhstan Cities League (open to city teams from Kazakhstan)

Campionato Italiano (open to regional teams from Italy, also experimenting with vote chess tournaments)

Club - Team Match - General

Team Match Championship League (open to all teams, split into divisions by team strength)

TMCL960 (a Chess960 version of the Team Match Championship League)

Club Chess Tour (a series of individual tournaments of varying formats, mostly team matches but also vote chess)

Knockout Team Match League (regular team match tournaments)

Liga Mundial de Clubes de Futbol - World League Football Club (competition between fan clubs of football teams)

One World League (open to all clubs, annual leagues - rating restricted and open - and tournaments in various formats)

World Council of Chess - League (knockout team match league)

Professional Chess Association World League Teams (league for regional, sports, and themed clubs)

Power League (knockout and league tournaments, both standard and 960)

New Wave League (team match league)

Global Football League (competition between fan clubs of football teams, replacement for the inactive Champions League)

World Chess Team Olympiad (team match competitions in various formats)

POWER LEAGUE (team match and vote chess leagues)

Club Wars (team match and vote chess leagues)

Club - Live Matches

Live Chess World League (open to national teams)

Live Chess European League (open to European national teams)

Asian Live Chess League (open to Asian national teams)

Friendly Live Chess League (open to all clubs)

Club - Vote Chess

Club Chess Tour (a series of individual tournaments of varying formats, mostly team matches but also vote chess)

Knockout Vote Chess League (regular vote chess tournaments)

Dragon Lovers Vote Chess League (double round-robin leagues)

One World League (annual vote chess league, open to all clubs; also runs a 960 vote chess league)

POWER LEAGUE (team match and vote chess leagues)

Individual

Note: some of these tournaments involve teams, but you join as individual members and form a team rather than joining with a whole club

Untitled Tuesday - two monthly blitz tournaments, and a competition for the best performance over the course of a year.

Not-so Pro Chess League - roughly follows the format of the Pro Chess League; you play as part of a team, rather than on your own, but I've listed it in the Individual section since it's not a Club event.

Not-so Pro Blitz Chess League - like the Not-so Pro Chess League, but for blitz instead of rapid.

Not-so Pro Bullet Chess League - similar, but for bullet

Not-so Pro Puzzle Battle League - similar, but for Puzzle Battle

Teams Slow Bullet League - a team bullet competition; like the Not-so Pro Chess League, it's not a club event, so listed under the Individual section.

Slow Chess League - live tournaments at slow time controls

Intermediate Blitz League - live blitz tournaments

Rapid Tournament Lovers - live rapid tournaments

4TeamChess International - 4-player teams compete to increase their rating averages over time

New Leagues and Tournaments (new leagues will go here until they're well-established with a track record of stability of several months or more):

Ultra Bullet Chess League - for 10- and 30-second bullet tournaments

Inactive? (if a league in this category is still active, please let me know)

Muslim World League (open to Islamic teams - or Islamic national teams?)

Vote Chess World Cup (open to national teams)

African League (open to national teams from Africa)

Indian Chess League (open to state teams from India)

Liga Brasileira (open to state teams from Brazil)

Bullet Chess League (bullet tournaments)

Champions League (competition between fan clubs of football teams - replaced by Global Football League)