- Op
- Op-Center
- Op-die-Berg
- Op. cit.
- OpLePo
- OpNet
- Op art
- Op hoop van zegen
- Opa-locka
- Opa (linguaggio di programmazione)
- Opa Nguette
- Opa Sanganté
- Opa opa
- Opabinia regalis
- Opacchiasella
- Opaci
- Opacimetro
- Opacità
- Opacus
- Opaka
- Opal
- Opal (Virginia)
- Opal (Wyoming)
- Opal (gruppo musicale)
- Opal Bogard
- Opal City
- Opal Dream
- Opal Pool
- Opal Tometi
- Opale
- Opalenica
- Opalescent
- Opalescenza
- Opalia
- Opaline
- Opalka
- Opallionectes andamookaensis
- Opamyrma hungvuong
- Opan
- Opanak
- Opanoide
- Opara
- Opare
- Oparino
- Oparinskij rajon
- Opasno dlja žizni!
- Opasnye druz'ja
- Opatoro
- Opatov
- Opatov (Jihlava)
- Opatov (Pardubice)
- Opatov (Třebíč)
- Opatovce
- Opatovce nad Nitrou
- Opatovec
- Opatovice
- Opatovice (Moravia meridionale)
- Opatovice (Olomouc)
- Opatovice I
- Opatovice nad Labem
- Opatovská Nová Ves
- Opatowiec
- Opatrum sabulosum
- Opatów
- Opatów (Santacroce)
- Opatów (Slesia)
- Opatówek
- Opava
- Opava (Slovacchia)
- Opava (disambigua)
- Opava (fiume)
- Opazo
- Opañel (metropolitana di Madrid)
- Opařany
- Opb
- Opbopachop
- Opcode
- Opdyke West
- Ope
- Ope (Svezia)
- Ope legis
- Opeatogenys gracilis
- Opechancanough
- Opekanec
- Opekun
- Opel
- Opel (album)
- Opel (disambigua)
- Opel (famiglia)
- Opel 1.0 L
- Opel 1.2 L
- Opel 1.3 L
- Opel 1.8 L
- Opel 10/18 PS
- Opel 10/24 PS
- Opel 10/45 PS e 10/40 PS
- Opel 12/34 PS
- Opel 1200
- Opel 12PS
- Opel 13/30 PS
- Opel 14PS
- Opel 15/24 PS e 16/35 PS
- Opel 16/18PS e 14/20PS
- Opel 18/50 PS
- Opel 2.0 L
- Opel 20/22 PS
- Opel 21/55 PS
- Opel 24/50 PS e 25/55 PS
- Opel 30/75 PS
- Opel 30PS
- Opel 30PS (1904)
- Opel 30PS (1922)
- Opel 34/80 PS
- Opel 4/8 PS "Doktorwagen"
- Opel 40/100 PS
- Opel 40PS
- Opel 45PS
- Opel 4PS
- Opel 5/12 PS
- Opel 50PS
- Opel 50PS (1906)
- Opel 50PS (1927)
- Opel 6/12 PS
- Opel 6/16 PS
- Opel 60PS
- Opel 60PS (1908)
- Opel 60PS (1927)
- Opel 7/34 PS e 8/40 PS
- Opel 70PS
- Opel 8/16 PS
- Opel 8/20 PS
- Opel 8M 21
- Opel 9/25 PS
- Opel 9PS
- Opel Adam
- Opel Admiral
- Opel Admiral (1937)
- Opel Agila
- Opel Antara
- Opel Arena
- Opel Ascona
- Opel Ascona 400
- Opel Ascona A
- Opel Ascona B
- Opel Ascona C
- Opel Astra
- Opel Astra F
- Opel Astra G
- Opel Astra H
- Opel Astra J
- Opel Astra K
- Opel Astra L
- Opel Blitz
- Opel CIH Four
- Opel CIH Six
- Opel Calibra
- Opel Calibra Bertone Slalom
- Opel Cascada
- Opel Combo
- Opel Commodore
- Opel Corsa
- Opel Corsa A
- Opel Corsa B
- Opel Corsa C
- Opel Corsa D
- Opel Corsa E
- Opel Corsa F
- Opel Crossland X
- Opel Diplomat
- Opel Experimental GT
- Opel Flextreme GT/E
- Opel Frogster
- Opel Frontera
- Opel Frontera (2024)
- Opel GT
- Opel GT2
- Opel GT (2006)
- Opel Grandland X
- Opel Insignia
- Opel Insignia A
- Opel Insignia B
- Opel Junior
- Opel Kadett
- Opel Kadett (1936)
- Opel Kadett A
- Opel Kadett B
- Opel Kadett C
- Opel Kadett City
- Opel Kadett D
- Opel Kadett E
- Opel Kapitän
- Opel Karl
- Opel Manta
- Opel Meriva
- Opel Mokka
- Opel Mokka A
- Opel Mokka B
- Opel Monterey
- Opel Monza
- Opel Movano
- Opel OHC Four
- Opel OHV Four
- Opel OHV Six
- Opel Olympia
- Opel Olympia (disambigua)
- Opel Olympia A
- Opel Olympia Rekord
- Opel Omega
- Opel P4
- Opel Patent-Motorwagen
- Opel Performance Center
- Opel RAK.2
- Opel RAK e
- Opel Rally Team
- Opel Regent
- Opel Rekord
- Opel Rekord A
- Opel Rekord B
- Opel Rekord C
- Opel Rekord D
- Opel Rekord E
- Opel Rekord P1
- Opel Rekord P2
- Opel Rocks-e
- Opel Senator
- Opel Signum
- Opel Sintra
- Opel Speedster
- Opel Super 6
- Opel Tigra
- Opel Tigra TwinTop
- Opel Trixx
- Opel Twin
- Opel Vectra
- Opel Vivaro
- Opel X14XE
- Opel X16XEL
- Opel Zafira
- Opel Zafira A
- Opel Zafira B
Estratto da "https://it.wikipedia.org/wiki/Speciale:Prefissi/Op"