Unión Deportiva Valdez was an Ecuadorian football club based in Milagro, Guayas. Founded in 1915, it played one season in the top-flight Serie A in 1978. It dissolved in 1997.

Achievements Serie B Runner-up (1): 1978 E1 Campeonato Professional de Guayaquil Champion (2): 1953, 1954

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