Mancia is a surname. Notable people with the surname include:
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Adrienne Mancia (1927–2022), American film curator
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Iván Mancía (born 1989), Salvadoran footballer
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Orietta Mancia (born 1968), Italian runner
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Saúl Enrique Mancía (born 1983-84), Salvadoran politician
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Titus Curtilius Mancia, Roman senator
{{Surname
Italian-language surnames