American soccer writing, history & data.
| Team | Location | Years |
|---|---|---|
| I.R.T. Rangers F.C. | Bronx, NY | 1928-1930 |
| Idaho Wolves | - | 2004 |
| IMG Academy Bradenton | - | 1998-2018 |
| Immaculate Conception | St. Louis, MO | 1908-1911 |
| Independent A.F.C. | San Francisco, CA | 1902-1912 |
| Independent A.F.C. 2nd | San Francisco, CA | 1911-1912 |
| Indian Motorcycle | Milwaukee, WI | 1920-1922 |
| Indiana Blast | Indianapolis, IN | 1997-2004 |
| Indiana Blaze | Indianapolis, IN | 1997-2001 |
| Indiana Flooring Co. F.C. | New York, NY | 1924-1927 |
| Lineage: New York Nationals | Related teams: New York Giants, New York Nationals | ||
| Indiana Invaders F.C. | - | 1983-2011 |
| Indiana Invaders F.C. | South Bend, IN | 1998-2011 |
| Indiana Tigers | Gary, IN | 1973-1974 |
| Lineage: Chicago Cats | Related teams: Chicago Cats | ||
| Indiana Twisters Lineage | - | 1996-1997 |
| Lineage: Indiana Twisters | Related teams: Indiana Twisters, Indianapolis Twisters | ||
| Indiana Twisters | Indianapolis, IN | 1997-1997 |
| Lineage: Indiana Twisters | Related teams: Indianapolis Twisters | ||
| Indiana United | - | 2011 |
| Indianapolis Braves | - | 2007 |
| Indianapolis Twisters | Indianapolis, IN | 1996-1996 |
| Lineage: Indiana Twisters | Related teams: Indiana Twisters | ||
| Indios USA | - | 2007 |
| Indy Daredevils Lineage | - | 1978-1979 |
| Lineage: Indy Daredevils | Related teams: Indy Daredevils, New England Oceaneers, Rhode Island Oceaneers | ||
| Indy Daredevils | Indianapolis, IN | 1978-1979 |
| Lineage: Indy Daredevils | Related teams: New England Oceaneers, Rhode Island Oceaneers | ||
| Indy Eleven | - | 2014 |
| Indy Eleven NPSL | - | 2007 |
| Inland Empire Panteras | Redlands, CA | 1995-1995 |
| Innisfail H. & F.A. | St. Louis, MO | 1907-1908 |
| Innisfail Hurling & Football Association | - | 1905 |
| Innisfail's F.C. | St. Louis, MO | 1909-1921 |
| Lineage: Ben Miller F.C. | Related teams: Barrett-Hoover S.C., Ben Miller F.C., De Andreis, West Ends | ||
| Inter S.C. | Queens, NY | 1960-1969 |
| Inter S.C. | San Jose, CA | 1996 |
| Inter United FC | - | 2014 |
| Inter-Montreal F.C. | - | 1983 |
| Interborough Rapid Transit F.C. | New York, NY | 1919-1920 |
| Internacional de Toronto | - | 2014 |
| International A.C. | New York, NY | 1895-1896 |
| International Club | Madison, WI | 1932-1935 |
| Iowa Rush | - | 2010 |
| Irish-American A.C. | St. Louis, MO | 1911-1913 |
| Lineage: Business Men's A.C. | Related teams: Business Men's A.C. | ||
| Irish-Americans Lineage | - | 1933-1951 |
| Lineage: Irish-Americans | Related teams: Irish-Americans, Irish-Americans, Kearny Celtics | ||
| Irish-Americans | Kearny, NJ | 1933-1942 |
| Lineage: Irish-Americans | Related teams: Kearny Celtics | ||
| Irish-Americans | Kearny, NJ | 1949-1951 |
| Lineage: Irish-Americans | Related teams: Kearny Celtics | ||
| Ironsides A.F.C. | Newark, NJ | 1916-1917 |
| ISC Gunners FC | - | 2012 |
| Italian Virtus | - | 1962 |