All Fishing Charters
- MJ's Sportfishing Charters – St. Joseph River
- MK Fishing Guide Service – Garrison
- MK Fishing Guide Service – Osakis
- MK Fishing Guide Service – St Cloud
- MM Charters
- MONGOLIA TAIMEN FISHING
- MONSTER PEACOCK BASS ADVENTURE
- MQT Adventures
- MV Charters
- MV Pure Indulgence - Troppo Fishing
- MV Solita
- MVP Guide Service
- MVPoseidon
- Maamudaa
- Maas Fishing Tours
- Mac-Attack Charters Deep Sea Fishin
- MacDaddy Offshore Charters
- MacDougall Adventure Charters
- Macaronesia Charter la Gomera
- Macronesia Big Game Fishing – Lanzarote
- Mad Charters
- Mad Gillz Fishing
- Mad Hatter
- Mad Hatter Fishing Charters
- Mad Marlin Sport Fishing Lodge
- Mad Son Charters
- Madeira Big Game Fishing - Our Mary
- Madeira Fishing Charters – Prime
- Madeira Marlin Charters - Balancal
- Madeira Sight Casting
- Madness Charters
- Mae Guide Angler
- Mae Guide Century
- Maenam Nga Fishing & Homestay Trips
- Mag Bay Fishing Fleet
- Magda Cruises fishing boat
- Magdalena Sport Fishing
- Maggie Joe Sportfishing – Ku’uipo
- Maggie Joe Sportfishing – Maggie Joe
- Maggie Joe Sportfishing – Seahawk
- Maggie Joe Sportfishing – Sundower
- Magic Bowfishing
- Magic Sport Fishing
- Magnanimous Sportfishing Charters
- Magnet Fishing Charters – Portland
- Magnetic Island Fishing Charters
- Magnum Express Fiji
- Mahalo Charters
- Mahi Mahi Fishing Tours - Diana
- Mahi Mahi Sportfishing – Annika
- Mahi Mahi ll: Reef Fishing
- Mahi Mania Fishing Charters
- Mahi Sportfishing Puglia
- Mahone & Sabino Lakes Bass Fishing – Mauricio
- Mahuey Boat Charter Maldives – 24'
- Mahuey Boat Charters Maldives -33ft
- MainSqueeze Fishing Charters
- Maine Fly Guide
- Maine Offshore Adventures
- Maine Wilderness Fishing
- Maine Wilderness Fishing Bar Harbor
- Mainely Blue Charters
- Mainlanders Sport Fishing
- Mainline Fishing Charters
- Mainstream Fishing Charters – 20'
- Mainstream Fishing Charters – 26'
- Mainstream Guides - Newaygo
- Mainstream Guides - Wellston
- Majestic Michigan Charters – Brethren
- Majestic Michigan Charters – Croton
- Majestic Michigan Outfitters
- Majo Fishing Lodge – Bally Hoo I
- Majo Fishing Lodge – Majo V
- Major Look Fishing Charters
- Major Tom Adventures
- Makai Charters
- Makai Sportfishing
- Makaira Cozumel Fishing Charters
- Makaira Fish Company – 24' Yellowfin
- Makaira Fish Company – 33' Sea Hunter
- Makaira Luxury Charters
- Makaira Resort – Sea Dancer Charter
- Makaira Sportfishing
- Makarounas Fishing Trips Rhodes
- Make A Wake – Captiva Island
- Make A Wake – Matlacha
- Make A Wake – Sanibel Island
- Makin Big Bass Memories
- Makin Plans Charters
- Makin' Memories Fishing Charter
- Makin' Waves Fishing Charters
- Makin' Waves Fishing Charters – 28'
- Makina Sportfishing
- Mako 2 Charters
- Mako Sportfishing And Tours – Mako III
- Mako Tours Bonaire
- Malama Charters Hilo LLC
- Maldives Liveaboard – 100' Yacht
- Maldives Liveaboard – 112'
- Maldives Liveaboard: Honors Legacy