Costache is a Romanian male given name and surname, derived from Constantin, that may refer to:
*Costache Aristia
*Costache Caragiale
*Costache Conachi
*Costache Leancă
*Costache Negri
*Alexandru Costache
*Tamara Costache
*Valentin Costache
*Victor Costache
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Romanian masculine given names
Romanian-language surnames
