All Boating Charters
- Maninha II
- Manly Sailing – Dk Yachts Force 24
- Manolis Marine Adventures
- Mant Yachting
- Manta
- 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
- 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
- Marlin 21 - efficient RiB for rental
- Marlin 38 premium RIB Charter
- Marlin My Darlin
- Marmoris Yachting Nha Trang
- Marnezos Fishing and Boat Trips
- Marrajo Fishing Charter
- 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
- Mayara Boating
- Mayer Charter – Luxury Island Hopping
- Mayhem Sportfishing
- Mb Holding SRL
- Mclir Srl
- Mediterranea Excursion
- Medulin Excursions – MB Sandra
- Medusa Charters
- Mega Tours & Sportfishing
- Megabite Costa Rica Sport Fishing
- Megacatch – Cris Makei
- Megacatch – Don Bosco
- Megafishing Beach
- Meio dia de exploração marinha saindo
- Mekong Sunset Cruise
- Melita - High Class Motoryat
- Mendoza's Sportfishing – Yaz Itzy
- Mera Mare Boat Tours
- Mera Mare Boat Tours - Mojito
- Meridian Private Yachts – 47' Carver Yacht
- Meridian Private Yachts – 62' Azimut Yacht
- Meridian4People
- Merit Boat Tours Split
- Merluzapr
- Mermaid Discovery