All Boating Charters
- Day on the water
- Daytripper Marine Services
- De La Paz Boat Travel
- Deboto Boats – Quicksilver 675
- Deboto Boats – Quicksilver 755 / Atlantic 750
- Deck & Cheers
- Deep Blue Charters
- Deep Color Excursions
- Deep Republic
- Deep Sea Charter Punta Cana
- Deep Sea Fishing – Bénitier Island Tour
- Deep Sea Scuba and Snorkeling
- Deep Sea Scuba and Snorkeling
- Deep blue PG
- DeepSea Exotic Charters
- Delphi Watersports – Private Boat Ride
- Delta Outfitters
- Delta of Tigre Boat Tour – Capt. Enrique
- Deluxe Boat Tours – Leopard 51
- Deluxe Boat Tours – Sea Ray
- Destin Crab Island Adventures
- Destin Dream Yacht
- Destin Expeditions
- Destin Luxury Charters – Revel
- Destin Private Tiki Lil Kahuna to Crab Island
- Destin Private Yacht
- Destiny Charters
- Detroit River Tour
- Devotion boat tours – 5 Islands Boat Trip
- Dhermi Boat Tours
- Diamante Blu – Next 22 Self-drive
- Diamante Blu – Saver 750
- Diamond Estates and Yachting SL
- Diamond Head Cruises – Snorkel & Whale Watch
- Diamond Jig Charters LLC
- Diamond Sailing Service
- Diamond in the Rough Charters
- Dimokriteio Cruises
- Dino Yachts Cancun – Flawless 46 & Jetski
- Dirty Dolly Boat Tours | Cocoa Beach
- Discover Parguera Boat Charter
- Discover Plavnik On A Pirate Ship
- Discover St.Lucia Tours
- Discover Tamarindo – Jungle Boat Tour
- Discovery Agri Tours
- Disney the VIP Yacht
- Dispatch Saltwater Tours
- Ditch Hag Sportfishing Charters
- Divergent Charters
- Divine Boats
- Doha, Cruise and Swim Journey
- Dolce Vita Charters
- Dolin Dive Center – Tobogan Tortuga Boat
- Dolphin & Donuts Cruise
- Dolphin & Morris Island Boat Tours
- Dolphin Connection Ingleside
- Dolphin Discoveries 1 – Hilton Head
- Dolphin Discoveries 2 – Hilton Head
- Dolphin Discoveries 3 – Hilton Head
- Dolphin Escape Charters
- Dolphin Landings Charter Boat – Fantasea
- Dolphin Landings Charter Boats – Phoenix
- Dolphin Landings Charter Boats –Island Hopper
- Dolphin Landings Charter Sailing Yacht –Magic
- Dolphin Navigation Catamaran Cruises
- Dolphin Navigation Catamaran Cruises – L 44
- Dolphin Safari Charters – Vitamin Sea
- Dolphin Tours Cocoa Beach
- Dolphin Watching with a Marine Biologist
- Dolphin, Shark Tooth & Fishing tours
- Dolphin,Manatee Tours. DolfunTours LLC
- Dolphins Marbella
- Domestic Six Pack
- Dominican Attitude Excursions
- Domino Charter
- Domus Salerno Boat Experience
- Dona Nina Fishing Tour
- Dorado Adventures Cancun Yacht
- Dorothy Charters
- Dorothy Marie Tours
- Dos Reyes Roatán Charter Fishing & Snorkeling
- Double "DD" Adventures
- Double Ace Charters
- Double Decker Tritoon with Waterslide
- Double Hooker Charters
- Double Slide Boat with Restroom up to 12
- Double Trouble Charters
- Double decker with slide
- Doubledown Charters
- Douro Charter
- Downtime: Vitamin Sea Tours
- Downtown Tampa Charters
- Dr. George Jones
- Dream Boat Service – Costa Smeralda Charter
- Dream Boat Service – Jet Ski Exclusive
- Dream Boat Service – Jet Ski Exclusive
- Dream Boat Service – Jet Ski Exclusive
- Dream Boat Service – Luxury Beneteau Antares
- Dream Boat Service – Luxury Yacht Sardinia
- Dream Boat Tours