- M Hotel Singapore
- M Resort Spa & Casino
- ME by Melia Cabo
- MGM Grand
- MGM Grand Detroit
- MIRAVAL RESORT & SPA
- MT MERU HOTEL
- MacArthur Place
- Madeline Hotel and Residences
- Madison Hotel
- Madrid Marriott Auditorium Hotel & Conference Center
- Main Street Station Casino, Brewery & Hotel
- Maison Dupuy - The French Quarter Hotel
- Maison de la Luz
- Malliouhana, An Auberge Resort
- Manchester Grand Hyatt San Diego
- Mandalay Bay Resort and Casino
- Mandarin Orchard Singapore
- Mandarin Oriental
- Mandarin Oriental Hyde Park, London
- Mandarin Oriental New York
- Mandarin Oriental Singapore
- Mandarin Oriental, Atlanta
- Mandarin Oriental, Boston
- Mandarin Oriental, Geneva
- Mandarin Oriental, Las Vegas
- Mandarin Oriental, Miami
- Mandarin Oriental, Milan
- Mandarin Oriental, Paris
- Mandarin Oriental, Prague
- Mandarin Oriental, Washington, D.C.
- Mandyville Hotel
- Marco Island Marriott Beach Resort
- Margaritaville Hollywood Beach Resort
- Marina Bay Sands
- Marina Inn at Grande Dunes
- Marina Mandarin Singapore
- Marina del Rey Marriott
- Maritim Resort & Spa Mauritius
- Marquis Los Cabos
- Marriott Baltimore Waterfront
- Marriott Courtyard Las Vegas Convention Center
- Marriott Harbor Beach Resort & Spa
- Marriott Hotels
- Marriott Hotels
- Marriott Hotels- Moab Utah
- Marriott Las Vegas Convention Center
- Marriott Marquis Chicago
- Marriott Marquis Chicago
- Marriott Marquis Houston
- Marriott Marquis Washington DC
- Marriott Milan
- Marriott Ranch Bed & Breakfast
- Marriott Residence Inn Hughes Center
- Marriott SpringHill Suites Las Vegas Convention Center
- Marriott's Custom House
- Marriott's Kaua'i Beach Club
- Marriott's Kauai Lagoons- Kalananipu'u
- Marriott's Ko Olina Beach Club
- Marriott's Maui Ocean Club- Lahaina & Napili Towers
- Marriott's Maui Ocean Club- Molokai, Maui & Lanai Towers
- Marriott's Newport Coast Villas
- Marriott's Waiohai Beach Club
- Mart
- Martin's Relais
- Mauna Kea Beach Hotel
- Mauna Lani Bay Hotel & Bungalows
- Meadowood Napa Valley
- Melia Cabo Real
- Melia Hotel Atlanta
- Melia Nassau Beach
- Meliá Caribe Tropical
- Meliá Costa del Sol
- Menin Hospitality
- Mercure Casa Veranda
- MesseCruise Business Hotelship
- MesseCruise Business Hotelship Düsseldorf
- MesseCruise Business Hotelship Frankfurt
- Metropole Hotel Brussel
- Miami International Airport Hotel
- Miami Marriott Biscayne Bay
- Miami Marriott Dadeland
- Miccosukee Resort & Gaming
- Millenium Hilton
- Millennium Bostonian
- Millennium Broadway Hotel New York
- Millennium Hotel Minneapolis
- Millennium UN Plaza Hotel United Nations - New York
- Minneapolis Marriott City Center
- Miramonte Resort and Spa
- Moevenpick Hotel Amsterdam City Centre
- Mohegan Sun
- Mohonk Mountain House
- Mokara Hotel & Spas
- Mombasa Continental Resort
- Mondrian Los Angeles
- Mondrian South Beach
- Montage Beverly Hills
- Montage Kapalua Bay
- Montage Laguna Beach
- Montage Palmetto Bluff
- Monte Carlo Resort and Casino
- Moon Palace Golf & Spa Resort
- Morrison-Clark Inn
- Mount Juliet Estate
- My Supplier
