American soccer writing, history & data.
| Team | Location | Years |
|---|---|---|
| Uhrik Truckers | Philadelphia, PA | 1953–1965 |
| 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 |
| U.S. Pro-40 Select | New York, NY | 1998–2000 |
| 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 |