American soccer writing, history & data.
| Team | Location | Years |
|---|---|---|
| K-W United FC | - | 2006 |
| K-W United FC | - | 2011 |
| Kalamazoo FC | - | 2016 |
| Kalamazoo Kangaroos | Kalamazoo, MI | 1984–1986 |
| Kalamazoo Kingdom | Kalamazoo, MI | 1996–2006 |
| Kalamazoo Outrage | - | 2008 |
| Kalamazoo Quest | Kalamazoo, MI | 1998–1999 |
| Kansas City All-Stars | Kansas City, KS | 1996–1997 |
| Kansas City Brass | Kansas City, KS | 1998–2013 |
| Kansas City Comets | - | 1979 |
| Kansas City Comets | - | 1989–2005 |
| Kansas City Comets | - | 2010 |
| Kansas City Comets | Kansas City, MO | 1981–1991 |
| Kansas City Mystics | - | 2001 |
| Kansas City Shock | - | 2013 |
| Kansas City Spurs | Kansas City, MO | 1968–1970 |
| Kansas City Wiz | Kansas City, MO | 1996–1996 |
| Kansas City Wizards | Kansas City, MO | 1997–2010 |
| Kansas Magic | - | 2011 |
| KC Courage | - | 2014 |
| Ke-Nash-A | Kenosha, WI | 1926–1930 |
| Kearny A.A. | Kearny, NJ | 1897–1907 |
| Kearny Americans | Kearny, NJ | 1941–1949 |
| Kearny Celtics | Kearny, NJ | 1942–1949 |
| Kearny Scots | Kearny, NJ | 1949–1952 |
| Kearny Stars | Kearny, NJ | 1906–1907 |
| Keen Kutters | St. Louis, MO | 1908–1910 |
| Kelly Buick | Baltimore, MD | 1949–1951 |
| Kenosha Blues | Kenosha, WI | 1925–1926 |
| Kenosha Rangers A.F.C. | Kenosha, WI | 1913–1914 |
| Kenosha Sport Club | Kenosha, WI | 1931–1935 |
| Kentucky Fillies | - | 2000 |
| Kenwoods | - | 1941 |
| Kern's | St. Louis, MO | 1902–1904 |
| Kimberly S.C. | Kimberly, WI | 1931–1934 |
| Kingston Clippers | - | 2014 |
| Kingston Stockade FC | - | 2016 |
| Kinloch | St. Louis, MO | 1907–1909 |
| Kipper's Tavern | Milwaukee, WI | 1938–1940 |
| Kitchener Concordia | - | 1970 |
| Kitchener Kickers | - | 1990 |
| Kitchener Maple Leafs | - | 1971 |
| Kitsap Soccer Club | - | 2009 |
| Knights of Father Matthew | St. Louis, MO | 1909–1910 |
| Knoxville Force | - | 2011 |
| Knoxville Impact | Knoxville, TN | 1992–1996 |
| Knoxville Lady Force | - | 2012 |
| Kohler | Kohler, WI | 1925–1931 |
| Kokomo Mantis FC | - | 2016 |
| Kosova Albanians | - | 1997 |
| Kraze United FC | - | 2015 |
| KUFC Pursuit | - | 2010 |
| Kutis | St. Louis, MO | 1950–1951 |
| Kutis | St. Louis, MO | 1951–1952 |
| Kutis | St. Louis, MO | 1952–1953 |
| Kutis | - | 1947 |