| Montague Fine & Rare Wines LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2009 |
| Montealegre Company LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2015 |
| Montesion LimitedRadstock, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2024 |
| Montgomery County Department of Liquor ControlGaithersburg, MD, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Montres Journe London LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2023 |
| Monty Wines LtdBristol, United Kingdom · UKmontywines.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | –Premium (producers) | 26% | 2006 |
| Monument Group Europe LLPLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2012 |
| Moonlight Wine CoNew York, NY, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Moonpig.com LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1999 |
| Morandell ImportsGardena, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| More Wine LtdHassocks, United Kingdom · UKmorewine.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| Moreira and Son LtdRoslin, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| Moreno Cabrera Trading Co. LLCNapa, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Moreno Wine Importers Company LimitedCheadle, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1988 |
| Morf Brands, Inc.Denison, TX, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Morgan Classic Wines LimitedEast Sussex, United Kingdom · UKmorganclassicwines.com · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 1999 |
| Morgenrot Group PLCManchester, United Kingdom · UKmorgenrot.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | –Mid (producers) | 10% | 1970 |
| Moroccan Vineyards, LLCHouston, TX, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Morosini Mills LtdBradford, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1977 |
| Mosby WineryBuellton, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Moseler, Inc.Portland, OR, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mosella LLCLongwood, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Moses Spirits USA LLCFort Lee, NJ, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mosimanns LtdUnited Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1987 |
| Moss Automotive Storage LtdHarrow, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2018 |
| Mossa Wine Imports L.L.C.Miami, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mossman Family Import Company LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2014 |
| Motan Colortronic LtdChesterfield, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2009 |
| Mother London LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2003 |
| Mount Street Caterers LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1959 |
| Mount West Estate Inc.Manhasset, NY, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mountain People's Wine Distributing, Inc.Nevada City, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mountain Valley LtdUnited Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2011 |
| Mountain West Wines, LLCWest Sacramento, CA, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mountain Wine Cellars LLCMiami, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Moura Brothers Wine Selection, IncSan Juan, PR, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mp Imports IncPlainview, NY, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Mr Lawrence Wine Merchants LtdBishop's Stortford, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2002 |
| Mr Majestic Drinks LimitedBarking, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2023 |
| Mr. Retro LLCPensacola, FL, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Msi-Moving Specialists Int. LtdBedford, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2011 |
| Muckle Brig LimitedEdinburgh, United Kingdom · UKmucklebrig.com · checked 2 Nov 2026 | UK | 0 | – | – | – | – | 2014 |
| Mufson, Faron & Brand LLCWashington, DC, United States · USchecked 2 Nov 2026 | US | 0 | – | – | – | – | – |
| Multimarvel UK LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2024 |
| Mundus Wines LtdUnited Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1999 |
| Murassi Winery LtdSouth Croydon, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2023 |
| Murphy & Son LtdNottingham, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 1909 |
| Murphy London Communications LtdChislehurst, United Kingdom · UKchecked 2 Nov 2026 | UK | 0 | – | – | – | – | 2020 |
| MuruWinesFinland · muruwines.fi · checked 1 Nov 2026 | | – | 65 | France, Italy, United StatesChablis, Ribera del Duero | –Premium (producers) | 28% | – |
| Museum Wines LtdSalisbury, United Kingdom · UKmuseumwines.co.uk · checked 2 Nov 2026 | UK | 0 | – | – | –Premium (producers) | 8% | 2006 |