| O Fim do Mundo, São Paulo, Brazil | O Kazebre, São Paulo, Brazil |
| O Lagar, Neda, Spain | O Lar de Picas, Ares, Spain |
| o meu mercedes, Oporto, Portugal | O Nightclub, Windsor, ON, Canada |
| O Patro Vys, Montreal, QC, Canada | O Pelouro, Pontedeume, Corunna, Spain |
| O Século, Lisbon, Portugal | O Son de Cociña, Fene, Spain |
| O Túnel, Corunna, Spain | O Zone, Vancouver, BC, Canada |
| O´ Brien´s, Santa Monica, CA, USA | O´Learys, Sundbyberg, Sweden |
| O-Baren, Stockholm, Sweden | O-DO, Niigata, Japan |
| O-east, Narita, Japan | O-Nest, Shibuya, Japan |
| o-ton, Mannheim, Germany | O-Vision Park, Oberhausen, Germany |
| O?owianka, Gdansk, Poland | O?rodek Kultury, Piaseczno, Poland |
| O.A.P., Victoria, BC, Canada | O.C. Fairgrounds, Costa Mesa, CA, USA |
| O.co Coliseum, Oakland, CA, USA | O.D., Fukuoka, Japan |
| O.K. Hotel, Seattle, WA, USA | O.N.E, Mandan, ND, USA |
| O.T. Price's, Santa Cruz, CA, USA | O.T. Price's, Soquel, CA, USA |
| O.U.T., Warner Street, Fortitude Valley, Brisbane, Australia | O.W "Jawornik", Jawor, Poland |
| O' Artoteca, Milan, Italy | O' Brien's Pub, Allston, MA, USA |
| O' Fiachs Irish Pub, Mechelen, Belgium | O'Banion's, Chicago, IL, USA |
| O'Brien Field, Peoria, IL, USA | O'Brien's Pit Barbecue, Rockville, MD, USA |
| O'Brien's Pub, Allston, MA, USA | O'Briens, Santa Monica, CA, USA |
| O'briens, Coram, NY, USA | O'Briens Bar, Barry, Wales |
| O'brother kfé, Grenoble, France | O'bundies, Marseilles, France |
| O'Carrol, Rancagua, Chile | O'Cayz Corral, Madison, WI, USA |
| O'Club, Oporto, Portugal | O'Connell Park, Mitchelstown, Ireland |
| O'Connell's, Dundalk, Ireland | O'Connell's Pub & Nightclub, San Diego, CA, USA |
| O'Connells, Eyre Square, Galway, Ireland | o'connors, Killarney, Ireland |
| O'Donoghue's, Aberdeen, Scotland, Aberdeen, Scotland | O'Dwyers, Trier, Germany |
| O'Gara's Garage, St. Paul, MN, USA | O'Hara, Split, Croatia |
| O'Henry's, Glasgow, Scotland | O'Keefe Centre, Toronto, ON, Canada |
| O'Keeffes, Clonmel, Ireland | O'Laughlin Auditorium, South Bend, IN, USA |
| O'Leary's, DeKalb, IL, USA | O'Leary's, Midlothian, IL, USA |
| O'Learys, Gävle, Sweden | O'Learys, Södertälje, Sweden |
| O'Learys, Kristianstad, Sweden | O'Malley's, Tucson, AZ, USA |
| O'Malleys, Vaasa, Finland | O'malleys, Margate, FL, USA |
| O'Neill Center, Danbury, CT, USA | O'Neill's, Bournemouth, England |
| O'Neills, Birmingham, England | O'Neilly's Pub, Macon, GA, USA |
| O'Reilly Family Event Center, Springfield, MO, USA | O'Reilly Theatre, Dublin, Ireland |
| O'Reilly's Pub, Philadelphia, PA, USA | O'Riley's, Dallas, TX, USA |
| O'Rilley Pub, Brasília, Brazil | O'Sheas, West Palm Beach, FL, USA |
| O'Shecky's, Columbus, OH, USA | O'sullivan's, Albi, France |
| O'Sullivans, Paris, France | O2 Academy 2, Newcastle upon Tyne, England |
| O2 ABC, Glasgow, Scotland | o2 abc 1, Glasgow, Scotland |
| O2 ABC2, Glasgow, Scotland | O2 Academy, Manchester, England |
| O2 Academy, Sheffield, England | O2 Academy, Birmingham, England |
| O2 Academy 2, Liverpool, England | O2 Academy 2, Birmingham, England |
| O2 Academy 2, Sheffield, England | O2 Academy 2, Leicester, England |
| O2 Academy 2, Glasgow, Scotland | O2 Academy 2, Bristol, England |
| O2 Academy 2, Leeds, England | O2 Academy 2 Islington, London, England |
| O2 Academy 3, Birmingham, England | O2 Academy 3, Leicester, England |
| O2 Academy Birmingham, Birmingham, England | O2 Academy Bournemouth, Bournemouth, England |