All Fishing Charters
- Lérika Fishing Tours
- M & M Charters
- M Sport Fishing Cabo - Merengue 40'
- M Sport Fishing Cabo - Mextime 31'
- M&M & Pro Level Charters
- MARSHRATS Inshore Charters
- MAXIMUS
- MBS Blu Charter
- MJ's Sportfishing Charters – Lake Michigan
- MJ's Sportfishing Charters – St. Joseph River
- MK Fishing Guide Service – Garrison
- MK Fishing Guide Service – St Cloud
- MM Charters
- MQT Adventures and Guide Service
- MV Pure Indulgence - Troppo Fishing
- MW Guide Service – Bass Fishing on Clear Lake
- Maamudaa
- Maas Fishing Tours
- Mac-Attack Charters Deep Sea Fishin
- MacDaddy Offshore 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 - Gavito
- Madeira Fishing Charters – Prime
- Madeira Marlin - Balancal
- Madeira Sea Fishing
- Madeira Sight Casting
- Madeira Sight Casting – 27'
- Madness Charters
- Mae Guide Angler
- Mae Guide Century
- Mag Bay Fishing Fleet
- Magda Cruises
- Magdalena Sport Fishing
- Maggie Joe Sportfishing – Ku’uipo
- Maggie Joe Sportfishing – Maggie Joe
- Maggie Joe Sportfishing – Seahawk
- Maggie Joe Sportfishing – Sundower
- Magic Bowfishing
- Magnanimous Sportfishing Charters
- Magnet Fishing Charters – Portland
- Magnum Express Fiji
- Mahalo Charters
- Mahi Mahi Cabo Sportfishing
- Mahi Mahi Fishing Charters – 42’ Mahi Mahi
- Mahi Mahi Fishing Charters – 42' Kepasa
- Mahi Mahi Fishing Charters – 52' Ironwill
- Mahi Mahi Fishing Tours - Diana
- Mahi Mania Fishing Charters
- Mahi Sportfishing Puglia
- Mahuey Boat Charter Maldives – 24'
- Mahuey Boat Charters Maldives -33ft
- Maine Fly Guide
- Mainely Blue Charters
- Mainlanders Sport Fishing
- Mainline Fishing Charters
- Mainstream Fishing Charters – 20'
- Mainstream Fishing Charters – 26'
- Mainstream Guides - Newaygo
- Mainstream Guides - Wellston
- Majestic Cruises
- Majo Fishing Lodge – Rampage 31'
- Majo Fishing Lodge – Stamas 39’
- 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
- Makana Lani Fishing
- Makarska Fishing
- Make A Wake – Captiva Island
- Make A Wake – Matlacha
- Make A Wake – Sanibel Island
- Makin Big Bass Memories
- Makin' Memories Fishing Charter
- Makin' Waves Fishing Charters
- Makin' Waves Fishing Charters – 28'
- Makina Sportfishing
- Mako Sportfishing And Tours – Mako III
- Mako Tours Bonaire
- Malama Charters Hilo LLC
- Maldives Liveaboard – 112'
- Maldives Liveaboard – 85' Yacht
- Maldives Liveaboard: 79' Yacht
- Maldives Liveaboard: Honors Legacy
- Maldives Liveaboard–Motor Yacht 108
- Mali Šjor – Primošten
- Malihini Sportfishing Charters
- Mallard Charters Fishing and Cruises
- Malolo Fisher - Fishing Machine
- Malolo Fisher Sports - Xtreme
- Malolo Fisher Sports – Koi Calevu