| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
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Ubon United | Thailand | |
 |
Uerdingen [KFC] | Germany | |
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Ufa [FC} | Russia | |
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Ujpesti TE | Hungary | |
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Ukrainian Nationals of Philadelphia | United States | |
 |
Ulsan | South Korea | |
 |
Ulsterville Rangers | Republic of Ireland | |
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Umm Salal | Qatar | |
 |
Uniao de Leira | Portugal | |
|
Union Berlin | Germany | |
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Union St-Gilloise | Belgium | |
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United Western Senior FC (Winnipeg) | Canada | |
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Universitratea Craiova | Romania | |
 |
University of Auckland | New Zealand | |
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Uphill Saints | Scotland | |
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Upton Colliery FC | England | |
|
Upton Robins | England | |
 |
Utrecht [FC] | Holland |
