Alle sider med præfiks
- Opera
- Opera (browser)
- Opera (by)
- Opera (flertydig)
- Opera - Med døden i kulissen
- Opera Comique
- Opera Hedeland
- Opera Mini
- Opera buffa
- Opera comique (flertydig)
- Opera del Duomo
- Opera night
- Opera seria
- Operaakademiet
- Operaballet
- Operabranden
- Operación Puerto
- Operaelskeren
- Operaen i Midten
- Operaen på Holmen
- Operaer af Georg Friedrich Händel
- Operaer af Joseph Haydn
- Operaer af Jules Massenet
- Operaer af Wolfgang Amadeus Mozart
- Operafjellet
- Operahus
- Operahuse i verden
- Operahuset i Oslo
- Operahuset i Sydney
- Operakatten
- Operakomponister
- Operalia
- Operasanger
- Operation
- Operation (militær)
- Operation Achse
- Operation Active Endeavour
- Operation Allied Harvest
- Operation Amanda
- Operation Archery
- Operation Argo
- Operation Asfalt
- Operation Atalanta
- Operation Atlantic
- Operation Auguststorm
- Operation Avalanche
- Operation Avalanche (Afghanistan)
- Operation Backfire
- Operation Backfire (2. verdenskrig)
- Operation Bagration
- Operation Barbarossa
- Operation Barclay
- Operation Baytown
- Operation Black Buck
- Operation Blau
- Operation Blue Jay
- Operation Blå Flagermus
- Operation Boardman
- Operation Bøllebank
- Operation Catherine
- Operation Chestnut
- Operation Chettyford
- Operation Chrome Dome
- Operation Clausewitz
- Operation Cobra
- Operation Cobra (film)
- Operation Cobra (flertydig)
- Operation Compass
- Operation Condor
- Operation Corkscrew
- Operation Crusader
- Operation Dagsværk
- Operation Detroit
- Operation Dove
- Operation Downfall
- Operation Dragoon
- Operation Dynamo
- Operation Eagle Assist
- Operation Entebbe
- Operation Faraway
- Operation Fortitude
- Operation Foxley
- Operation Gefion
- Operation Gladio
- Operation Goodwood
- Operation Greed
- Operation Greif
- Operation GrindStop 2014
- Operation Guds Vrede
- Operation Hannibal
- Operation Husky - Slagorden
- Operation IceBridge
- Operation Inherent Resolve
- Operation Inmate
- Operation Ke
- Operation Kirsebærsten
- Operation Leo
- Operation Magic Carpet
- Operation Majestic
- Operation Market Garden
- Operation Mjølner
- Operation Mockingbird
- Operation Narcissus
- Operation Nickel Grass
- Operation Nordwind (1941)
- Operation Northwoods
- Operation Ocean Shield
- Operation Odyssey Dawn
- Operation Overlord
- Operation Panzerfaust
- Operation Paperclip
- Operation Payback
- Operation Perch
- Operation Pluto
- Operation Puffin
- Operation RECLIB
- Operation RECSYR
- Operation RJaN
- Operation RY
- Operation Renntier
- Operation Resolute Support
- Operation Restore Hope
- Operation Rolling Thunder
- Operation Roundup
- Operation Rösselsprung
- Operation Safari
- Operation Salomon
- Operation Samson
- Operation Samsø
- Operation Seelöwe
- Operation Serval
- Operation Sharp Guard
- Operation Shingle
- Operation Silberfuchs
- Operation Sizilien
- Operation Slapstick
- Operation Sledgehammer
- Operation Source
- Operation Span
- Operation Spring
- Operation Storm
- Operation Stösser
- Operation Ten-Go
- Operation Tonga
- Operation Torch
- Operation Tractable
- Operation Uranus
- Operation Valkyrie
- Operation Valkyrie (film)
- Operation Vengeance
- Operation Vigilant Resolve
- Operation Warp Speed
- Operation Weserübung
- Operation X
- Operation Yewtree
- Operation for Malrotation of the Midgut
- Operation helvede
- Operation rädda Danmark
- Operationel risiko
- Operationsanalyse
- Operationsforstærker
- Operationsstue
- Operationsstuens Hemmelighed
- Operativ kontrol
- Operatsija Y i drugije prikljutjenija Sjurika
- Operatør (geotermi)