 | ICON | MI | Detroit | 1993 | |
| Ili Holo | Hawaii | | 1974 | |
| Illustrated Men | CA | Los Angeles | 1983 | |
 | Imperial Court | CA | San Diego | | |
 | Imperial Guards (Now The Golden Gate Guards) | CA | San Francisco | | |
| Indiana boys of Leather | Indiana | | 2005 | |
 | Indiana Falcons | IN | Indianapolis | 2000 | |
 | Indy Slosh | Indiana | | | |
 | INKINK | | | | |
 | Inland Empire Bears | California | | | |
 | Inland Empire MC | CA | San Bernandino | 1976 | |
 | Inn Men | OH | Akron | 1979 | |
 | Inner Circle | California | | | |
 | Inquisition Dallas | TX | Dallas | | |
| Inter-Bike | Copenhagen | | 1994 | |
 | Interchain | New York | | | |
 | Interchain International | | | | |
| Interchange (women) | CA | San Francisco | | |
 | Inter-Club Fund | CA | San Francisco | 1972 | |
| International Dungeon and Playroom Association | | | 1995 | |
 | International Pipe Bears | NC | Weaverville | | |
 | International Roadmasters | MI | Detroit | 1974 | |
| International Roadmasters of Toldeo | OH | Toledo | 1976 | |
 | Iowa Breeders | Iowa | | | |
 | Iowa Stocks and Bonds | Iowa | | | |
 | Iron Circle | LA | New Orleans | 1977 | 1987 |
| Iron City Wrestling Club | PA | Pittsburgh | | |
 | Iron Cross Montreal | CAN | Montreal | 1972 | |
 | Iron Cross MC | CA | Los Angeles | 1974 | |
| Iron Cross MC (moved to Boston, MA) | FL | Ft Lauderdale | | |
| Iron Cross MC (originally from Florida) | MA | Boston | | |
 | Iron Eagle MC | OH | Canton | 1998 | |
 | Iron Eagle MC | MA | Wakefield | | |
| Iron Eagle MC | North Carolina | | | |
 | Iron Guard | New York | | 1975 | |
 | Iron Tiger MC | AZ | Phoenix | | |
| It's About Time | AZ | Tucson | | |