:For the numerical prefix see Wiktionary. Duo (Latin for "two") can refer to: Duet (music), a musical piece performed by two people Duo (album), an album by Richard Marx and Matt Scannell Duo (Mega Man), a fictional protagonist in the Capcom video game series Mega Man Duo (film), an independent film PowerBook Duo by Apple Macintosh Duo Maxwell, a fictional protagonist in the television series Gundam Wing Duo Airways, a defunct UK airline Intel Core 2 Duo, a computer processor built by Int… (More on Duo)