- Oggetto di Reuse Design
- Oggetto: costruzione di un edificio di 18 alloggi e ambienti comuni - APES S.C.P.A. - PISA
- OGGI Jeans Corporate Offices
- Ogilvy
- Ogilvy
- Ogilvy & Mather new headquarter
- Ogimachi House
- ogio ristorante
- OGK Group office
- Oglethorpe
- Ogni casa ha la sua scala, ogni scala ha la sua identità.
- OGNI PENSIERO VOLA - Mostra collettiva -
- Ognistile Parrucchiere
- Ogotun Close Apartments
- Ogotun Close Apartments
- OGR - Officine Grandi Riparazioni Ferroviarie
- Oguz Apartments
- OH LA LA | Restaurant
- Oh my Bosch!
- oh no
- Oh Porto Apartments
- Oh Yeah! Brewing
- OH! House
- OH! HOUSE
- Ohana House
- Ohana photo studio
- O'Hare Global Terminal Design Competition
- OhBo Organic Cafe
- Ohel Shlomo
- Ohene Djan sports Stadium
- ohhps!
- Ohio 40
- OHNIVCOVA
- O'home
- Ohplà
- Öhringen, Baden-Württemberg, Germany
- Ohringer Arts
- OHTINSKIY PARK 2
- Oi Marì
- Oi Polloi
- Oia Council – Identity
- Oia, Greece
- OIA_ House
- OIAM STYLING AGENCY Boutique
- Oido Prehistoric Museum
- OIG Showroom & Demo hall
- Öijared Hotel
- OIKIA
- Oikoa
- OIKOS RESIDENCE
- Oily Cart theatre
- OiLybia
- Oimemì
- Oinos Wine-Bar Restaurant, Nice, FRANCE
- OINOUSSIAN DIAMOND SHIPPING CORPORATION shipping offices in Piraeus Greece
- Oiselle Flagship Store
- OISSA
- Oita Soho
- OIZÝ - Dumpling Bar - Barcelona
- Ojalá
- OJETTI
- Ojko
- ojo inspirador
- OK
- OK LOFT
- Ok Maguey ll
- Oka Haus
- Okada Marshall House
- Okahu Bay House
- OKANA
- Okayama Building
- OKB company office
- OKC Henrietta B. Foster Center
- OKE Casa de cultura i biblioteca
- OKE_ Uffici
- Okeanija
- OKHA designs the Atlantic Seaboard Restaurant
- Okiko Studio
- okis candy and coffee
- Okko Hotel Design
- Okko Hotel Gare de l'Est
- Okko Hotel Grenoble