All Boating Charters
- Mana Kayak
- Manasa Adventure & Tours
- Manatee River Boat Rentals and Water Sports
- Manatee Sightseeing And Wildlife Boat Tour
- Manatee, Dolphin and 10,000 Islands Tour
- Manatee, Dolphin, 10,000 Islands Sunset Tour
- Manatee, Dolphin, Bird Tours Near Orlando
- MandaLu Sportfishing
- Mandara Phuket
- Mangrove Explorers
- Mangrove Tour
- Mangrove Tour by Long Island Venture
- Mangusta 92
- Manicsportfishing Charters
- Maninha II
- Manly Sailing – Dk Yachts Force 24
- ManoMarine
- Manolis Marine Adventures
- Mant Yachting
- Manta
- Manta Liveaboards – NAVIS 1
- Manta Ray Sailing – Bali Catamaran
- Mantis
- Manu Dreampoint Snorkeling
- Mar Brisa
- Mar Y Chela Boat
- Mar de Estrellas Charter – Tarifa II
- Mar de Estrellas Charter – Tarifa II Menorca
- Mara1One Yachting – SY Friendship
- Maragata Charters
- Marathon Mermaid Charters
- Marathon Mermaid Charters – Morada
- Marbella Boats Charter – Astondoa 40
- Marbella Boats Charter – Azimut 39
- Marbella Boats Charter – Rodman 1250 Sport
- Marco Island Boat Tours – Boat 1
- Marco Island Boat Tours – Boat 2
- Marco Island Boat Tours – Boat 3
- Marco Reel & Shore Charter
- Mare Calmo – Prestige 400 Fly
- Mare Nautica
- MareWaves Private Cruises
- Marea Charters
- Mares y Vientos
- Maria del Puerto – Armonía
- Maria del Puerto – Maui Ocean
- Maria del Puerto – Moana
- Maria del Puerto – Sirenas
- Mariaboat
- Marieta Sport Fishing
- Marin Travel
- Marina Boat Charters
- Marina Boat Charters – Princess V5
- Marina Boat Charters – Sports RIB
- Marina del Rey 39 Passenger Party Cruiser
- Marinas
- Marine Go
- Marinero Boat Tour
- Maris Turismo
- Maritime Commercial Charters
- Maritime Operations LLC
- Maritimo Yachts
- Mark Guillot’s Outdoor Adventures
- Mark Marine Charter
- Marko Boat Tour – Fishing & Snorkeling
- Marku Boat Tours
- Marlan’s boat tours - Integrity
- Marlan’s boat tours - Trick Sea
- Marlin 21 - efficient RiB for rental
- Marlin 23 with a Pro Skipper
- Marlin 38 premium RIB Charter
- Marlin My Darlin
- Marmoris Yachting Nha Trang
- Marnezos Fishing and Boat Trips
- Marrajo Fishing Charter
- Marsa Alam Red Sea Adventures
- Marsh Monster Charters
- Martha’s Vineyard Charter Company
- Mary Kate
- Mar~Ando Boat Tours Sarandë
- Maréna Boat Tours
- María del Carmen
- Mas Picudos Charters
- Mas Que Nada Sailing – Aldebaran
- Masheen Charters
- Master Bite
- Master Charters
- Mathis Ocean Adventures
- Mauger - Battelli 21'
- Mauger - Marlin 20
- Mauritius Sea Discovery
- Mautiyak – 32' Boat
- Mautiyak – Trimaran Kayak
- Maxed Out Charters
- Maxie Sailing Curacao – Private Boat Tours
- Maxim St Sailing – Jeanneau Elan 40ft
- Max’s Boating Adventures
- Maya
- Mayara Boating
- Mayer Charter – Luxury Island Hopping