Ács (or simply Acs, without diacritics) is a Hungarian-language occupational surname literally meaning "carpenter". Notable people with this surname include:
Gabor Acs (born 1926), Hungarian-born American architect Ilona Ács (1920–1976), Hungarian swimmer and Olympics competitor István Ács (1928–2018), Hungarian jurist and politician Johanna Acs (born 1992), German model and beauty pageant winner József Ács (disambiguation), several people Oszkár Ács (born 1969), Hungarian bass guitarist Péter Ács (born 1981), Hungarian chess grandmaster Zoltan Acs (born 1947), Austrian-born Hungarian and American economist
hu:Ács (családnév)