American soccer writing, history & data.
| Team | Location | Years |
|---|---|---|
| U.S. Pro-40 Select | New York, NY | 1998-2000 |
| Uhrik Truckers Lineage | - | 1953-1965 |
| Lineage: Uhrik Truckers | Related teams: First German-American S.C., Philadelphia Americans, Uhrik Truckers | ||
| Uhrik Truckers | Philadelphia, PA | 1953-1965 |
| Lineage: Uhrik Truckers | Related teams: First German-American S.C., Philadelphia Americans | ||
| Ukrainian Nationals | Philadelphia, PA | 1957 |
| Umbro-86ers Selects | Vancouver, BC | 1998-1998 |
| Union Iron Works | San Francisco, CA | 1915-1921 |
| United Caledonians | San Francisco, CA | 1909-1910 |
| United FC Binghamton | - | 2012 |
| United German Hungarians | Oakford, PA | 1939 |
| United States Soldiers | San Francisco, CA | 1910-1911 |
| United Steel Workers | Sparrows Point, MD | 1943-1945 |
| United Steel Workers of America, Local Union 2609 | - | 1943 |
| University of California | Berkeley, CA | 1911-1913 |
| Upward Stars FC | - | 2014 |
| Utah Blitzz | - | 2000 |
| Utah Freezz | West Valley City, UT | 1999-2001 |
| Utah Golden Spikers | Salt Lake City, UT | 1976-1976 |
| Utah Pioneers | Salt Lake City, UT | 1976-1976 |
| Utah Salt Ratz | - | 2003 |
| Utah Starzz | - | 1999 |