Inácio is a common Spanish/Portuguese given name (previously spelled "Ignácio"; "Inácio" is modern orthography) and occasionally a surname.
Examples as a surname include:
- Alisha Inacio, American professional wrestler and manager
- Augusto Inácio, former Portuguese football player
- Bankrol Hayden, American rapper born as Hayden Inacio
- Justin Inacio, Canadian professional lacrosse player
- Piá, real name João Batista Inácio, Brazilian football player
- Joelson, real name Joelson José Inácio, Brazilian football player
Examples as a given name include:
- Lula, real name Luiz Inácio da Silva, president of Brazil
- Manuel Inácio da Silva Alvarenga, Brazilian poet
- Inácio Carneiro dos Santos (born 1996), Brazilian footballer known simply as Inácio