Opera (disambiguation)
- Bruno Bozzetto
- Chinese opera
- Horse opera
- Kaoru Toyoda
- List of GoldSrc mods
- List of opera genres
- MICROS Systems
- MSC Opera
- OPERA experiment
- Opera
- Opera (1987 film)
- Opera (2020 film)
- Opera (Andrea Bocelli album)
- Opera (British magazine)
- Opera (Budapest Metro)
- Opera (Fleshgod Apocalypse album)
- Opera (Japanese magazine)
- Opera (Super Junior song)
- Opera (The Super Mario Bros. Super Show!)
- Opera (Tosca album)
- Opera (band)
- Opera (company)
- Opera (fabrica ecclesiae)
- Opera (web browser)
- Opera (Çetin Alp song)
- Opera Comique
- Opera Software
- Opera cake
- Opera house
- Opera publica
- Opera, Lombardy
- Operation Opera
- Opus (disambiguation)
- Opéra (Paris Métro)
- Opéra comique
- Opéra-Comique
- Paris Opera
- R. (R. Kelly album)
- Rock opera
- Sator Square
- Soap opera (disambiguation)
- Space Opera (disambiguation)
- The Opera (Seinfeld)
- Todmobile