Acha (also Achá) can be both a given name and surname. Notable people with the name include:
As a given name
edit- Acha, Archbishop of Esztergom (11th century), Hungarian prelate
- Acha of Deira (6th–7th century), Anglian princess
- Acha Septriasa (born 1989), Indonesian actress and singer
- Lady Acha no Tsubone (1555–1637), Japanese noblewoman and diplomat
As a surname
edit- Alberto Achá (1917–1965), Bolivian football defender
- Alexander Acha (born 1985), Mexican singer-songwriter
- José Aguirre de Achá (born 1877), Bolivian writer, politician and lawyer
- José María Achá (1810–1868), Bolivian military general and president of Bolivia
- Mariano Acha (1799–1841), soldier who fought in the Argentine Civil War
- Omar Acha (born 1971), Argentine historian and political essayist
- Pablo Acha (born 1996), Spanish archer