 | 10% Motorcycle Club | Ca | Palm Springs | 2004 | | |
 | 15 Association | Ca | San Francisco | 1980 | | |
| 24/7 Master Club | Co | Denver | | | |
| 24/7 Slave Club | Ca | Los Angeles | | | |
 | 3 SM | Can | Calgary | 1991 | | |
 | 3D Munch Group | Ca | Los Angeles | | | |
| 4 Players Club | Co | Denver | | | |
| 41 South MC | NZ | Wellington | | | |
| 4-L Club | Ca | San Francisco | 1994 | | |
| 5 Star MC | NZ | Auckland | | | |
| 501 Levi's Club | Ca | Los Angeles | 1992 | | |
| 6/2 Society | Ca | San Diego | 1989 | | |
 | 76ers | Ca | San Bernadino | 1976 | | |
| A.G.M | | | | | |
| AAMC (later the AMCC) | DC | Washington | 1969 | | |
 | Acadiana Power Exchange | La | Lafayette | | | |
| ACE | RI | Providence | | | |
 | AD HOC | Tx | Dallas | | | |
| Ad/Vice Squad | Il | Chicago | | | |
 | Adults Seeking Kink (ASK) | NC | Elizabeth City | | | |
 | Adventurers | Fl | Tampa | 1976 | | |
 | Affirmation Leathermen | Illinois | | 1986 | | |
| AfreieSMuenshen | GER | Munich | 1989 | | |
| AgibS/Mir | Kiel | | 1990 | | |
 | AGM | Sweden | Stockholm | | | |
| AktiveS/Muenchen | Germany | | 1995 | | |
| Alabama Celtics | Al | Mobile | 1974 | | |
 | Alameda County Leather | Ca | San Francisco | 1993 | | |
 | Albany Kink and Party Club | NY | Albany | | | |
 | Albany Power Exchange | NY | Albany | 2000 | | |
 | Alberta Kink Social Society | CAN | Alberta | 2003 | | |
| All Women of Leather (AWOL) | Ca | San Francisco | 1998 | | |
 | Alliance | TN | Memphis | | | |
 | Aloha Bears | Hawaii | | | | |
 | Alternative Erotic Lifestyles | New Mexico | | | | |
 | Alternative Events Assoc | Wa | Seattle | | | |
 | Alternative Hedonists | Mo | Kansas City | | | |
 | Alternative Lifestyles of Michiana | In | South Bend | | | |
 | Amazons MC | CAN | Toronto | | | |
| Ambassadors of Goodwill | Ma | Boston | 1977 | | |
 | Ambush | Tx | Dallas | 1990 | | |
 | American Leathermen MC | Tx | Houston | 1976 | | |
| American Social Men's Club of Boston (ASMC) | Ma | Boston | 1975 | | |
| American Uniform Association | New York | | 1977 | | |
| American Uniform Association | CAN | Vancouver | | | |
| American Uniform Association | DC | Washington | | | |
| American Uniform Association | Ma | Framingham | | | |
| American Uniform Association (Chicago Brigade) | Il | Chicago | | | |
| American Uniform Club | | | | | |
 | America's Finest City Bears | Ca | San Diego | | | |
 | Andromeda | NJ | Ashbury Park | 2002 | | |
| Anvil Dungeon International | GA | Atlanta | | | |
 | APEX - Arizona Power Exchange | Arizona | | 1998 | | |
| Apollos | New York | | 1969 | | |
 | Aquila MC | | | | | |
 | Arani in Leather | Mo | St Louis | 1991 | | |
 | Arctic Bears | Alaska | | | | |
 | Argonauts | New Jersey | | | | |
 | Argonauts | WI | Green Bay | 1974 | | |
 | Argonauts MC | CA | Los Angeles | 1971 | 1980 | |
| Argos MC | Amsterdam | | | | |
 | Arizona Amazons | AZ | Phoenix | | | |
| Arizona Brotherhood | Arizona | | | | |
| Arizona girls of Leather | Arizona | | | | |
| Arizona Leather Alliance | Arizona | | | | |
 | Arizona Men of Leather | AZ | Phoenix | 2005 | | |
 | Arizona Rangers MSC | AZ | Phoenix | | | |
| Arizona Sluts for Sensation (ASS) | AZ | Phoenix | | | |
 | Arizona Women of Leather | AZ | Phoenix | 2003 | | |
 | Arktos Bears | OH | Cleveland | | | |
 | Artemis Women's Motorcycle Club | California | | 1994 | | |
| Asian Leather / Fantasy Club | CA | San Francisco | | | |
| Association des Adeptes S&M Montreal | CAN | Montreal | 1989 | | |
| Association Motorcycliste Gaie Quebec | CAN | Quebec | | | |
 | Association Sportive Motorcycliste de France (ASMF) | FR | Paris | 1975 | | |
| Astronauts of LA | CA | Los Angeles | | | |
 | Atlanta Bondage Club | GA | Atlanta | | | |
 | Atlanta boys of Leather | GA | Atlanta | 2001 | | |
| Atlanta Corporal Punishment Club | GA | Atlanta | 1993 | | |
 | Atlanta S/M Solidarity | GA | Atlanta | 1987 | | |
| Atlantic MC Conference | Maryland | | | | |
 | Atlantic Motorcycle Coordinator Council | NJ | Hackensack | 1969 | | |
 | Atlantis MC | GA | Atlanta | 1972 | | |
 | Aton Minneapolis | MN | Minneapolis | 1972 | | |
 | Augusta Iron Rose Society | GA | Augusta | | | |
| Australia Deaf Leathermen | Australia | | | | |
 | Avatar LA | CA | Los Angeles | 1983 | | |
 | Avengers MC East | NJ | East Summit | 1978 | | |
 | Avengers MC West | CA | Claremont | 1977-01-01 00:00:00 | | |