Ciro is a name originally related to Cyrus the Great (the king of Persia):
Ciro (given name), a list of the people who share the Italian and Spanish given name Ćiro (given name), a list of the people who share the Croatian given name Ciro (opera), 1654 opera by Francesco Cavalli Cyrus Cuneo (1879-1916), Italian American artist who was generally known as Ciro Ciro, one of the nicknames given to the holotype specimen of Scipionyx
CIRO is also an abbreviation for:
Canadian Investment Regulatory Organization, an organization that sets regulatory and investment industry standards in Canada Cabinet Intelligence and Research Office, the national civilian intelligence agency of Japan
See also Cirò (disambiguation) Ciro's, nightclub in Los Angeles Ciro's (London), a branch of a nightclub/restaurant chain 1897—?