YYY Views 4 meanings found YYY is most recognized as the initials of the indie rock band Yeah Yeah Yeahs, while it also pops up in informal speech as a placeholder phrase and as the IATA code for Mont Joli Airport in Quebec. Miscellaneous Yeah Yeah Yeahs Youpi Youpi Yeah Yada Yada Yada Regional Mont Joli Airport, Mont Joli, Quebec, Canada