Guillermo Castro may refer to:
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Guillermo Castro (soldier)
Don Guillermo Castro (born 1810) was a Californio ranchero, military officer, and surveyor who once owned vast land holdings in Alameda County. He is the namesake of the city of Castro Valley and his estate, Rancho San Lorenzo, is the namesake of ...
(1810-?), Mexican soldier and magistrate
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Guillermo Castro (Salvadoran footballer)
Guillermo Antonio Castro Orellana (born 25 June 1940 in San Salvador) is a retired footballer from El Salvador.
Club career
Nicknamed ''el Loro (the Parrot)'', he has most notably played for local side Atlético Marte, with whom he made his ...
(born 1940), Salvadoran footballer
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Guillermo Castro (Spanish footballer) (born 1973), Spanish footballer
{{hndis, Castro, Guillermo