Guillermo Hernandez can refer to
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Willie Hernández (1954–2023), Puerto Rican baseball player
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Guillermo Hernández-Cartaya (born 1932), banker
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Guillermo Hernandez (tennis), Filipino tennis player
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Guillermo Hernández (footballer, born 1942), Mexican football defender
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Guillermo Hernández (footballer, born 1971), Mexican football manager and former defender
{{DEFAULTSORT:Hernandez, Guillermo