| Ops Wines LtdLondon, United Kingdom · UKopswines.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | –Fine (producers) | – | 2018 |
| Options Group LtdEdgware, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1999 |
| Oracle Fine Wines LimitedWorthing, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| Orange Pack LtdCorby, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2015 |
| Orbit Brewing LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2013 |
| Orbit Wines LimitedBrighton, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2017 |
| Orchard Global Asset Management LLPLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2008 |
| Orchard-Lisle WinesSaxmundham, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| Oregon Brand Management, Inc.Portland, OR, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Organic Grape Spirit LtdAshford, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2019 |
| Organica Food & Wine LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2015 |
| Oriental Club LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2014 |
| Oriental Drinks LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2016 |
| Origin Wine LtdBanbury, United Kingdom · UKorigin.wine · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 2004 |
| Original Jel Shot Co.Myakka City, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Original Wine & SpiritsMiami, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Original Wooden Case LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2014 |
| Orion Wine Imports, LLCClearwater, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Orison Wines LLCNapa, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Orlando's Fine Foods LtdAylesbury, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2020 |
| Ormos Trades LtdWatford, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2012 |
| Orthodox Heritage LtdBracknell, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2025 |
| Os Vacation LLCRiverview, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Osa Fine Spirits LtdUnited Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2003 |
| Osteria Ovada LtdLondon, United Kingdom · UKosteriaovada.com · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 2021 |
| Other World Wines LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| Otros Vinos LtdStockport, United Kingdom · UKotrosvinos.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 2015 |
| Ottolenghi LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2002 |
| Our Sommelier LtdLondon, United Kingdom · UKoursommelier.com · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 2013 |
| Our World, Our Community, Inc.San Diego, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Outernet Venue LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2021 |
| Overseas Courier Service LimitedColnbrook, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1972 |
| Oxford and Cambridge ClubLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2019 |
| Oxford Export Services LtdWatlington, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1989 |
| Oxford Immunotec Global LimitedAbingdon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2013 |
| Oxford Wine Wholesale LtdOxford, United Kingdom · UKoxford.wine · checked 2 Nov 2026 | UK | 0 | – | – | –Mid (producers) | 10% | 2025 |
| Oxuniprint LimitedOxford, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1984 |
| Oxygen Health Communications LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2006 |
| Ozuk Booze LtdPeterborough, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2022 |
| P & A Beverages, Inc.North Hollywood, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| P J Shipping LimitedDover, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1999 |
| P W Amps LtdPeterborough, United Kingdom · UKampswinemerchants.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | –Premium (producers) | 15% | 1957 |
| P&P Distribution LimitedNottingham, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| P. M. Albers Wine ImportersMiddleburg, VA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| P.O.D Hospitality & Leisure LtdChristchurch, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2021 |
| Pacific Bridge Trading, LLCSeattle, WA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Pacific Edge Marketing Group, Inc.Westlake Village, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Pacific International Liquor, Inc.Los Angeles, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Pacific Prime Wines LLCOakland, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Pacific Rim Winemakers, Inc.Richland, WA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |