All Boating Charters
- Key West Boating Connection
- Key to the Sea – Private Parasailing Tour
- Key to the Sea – Sea Ray Boat Charter
- Key to the Winds – Marlago
- KeyZ Charters
- Keys Aquatic Adventures
- Keys Boat Tours
- Keys Disease Charters
- Keys Time Charters, Inc.
- Kilina Company – Bali
- Kilina Company – Leopard 40
- Kilina Company – Luisa
- Kilina Company – Robertson 40 Motor
- Kilina Company – Sunny Wind
- Kilo Whiskey Charters
- Kimbara Travel – Marcela Teresa
- Kimbara Travel – Private Yacht Experience
- King Stalker Sports Fishing
- Kisite Discovery Safaris
- Kite Hatteras
- Kiwi's Boat Trips and Charters
- Klaric Nautika Charter – Marlin 790 P Dynamic
- Klaric Nautika Charter – Quicksilver 675 AO
- Klobuk Travel – 40' Leader
- Klobuk Travel – 42' Antares
- Knee Deep Charters
- Knetmarine LLC
- Knot Stressing Charters
- Knot Tied Down Charters
- Knot Tuggin Sportfishing
- Knotical Adventures Two LLC
- Koehler Kraft Charters - Carolina
- Koehler Kraft Charters - Dickie Walker
- Koehler Kraft Charters - Sally
- Kokomo Keys Charters Veteran Owned
- Komani Lake & Shala River Private Boat Tour
- Komani Lake Experience
- Komani Lake to Shala River Boat Tour
- Komodo Amazing Destination
- Komodo Boat Charter
- Konadice Sportfishing
- Kool Kat Watersports
- Kopis Charters
- Korcula Charter
- Korsaro Boat – Kuzma (Private & Group Tours)
- Korsaro Boat – Private & Group Tours
- Kotor Bay Private Tours – Drinks on Board
- Kotor Speedboat Tours
- Kotor Vip Boat Tours – Blue Cave
- Kotor Vip Boat Tours – Blue Cave 2
- Kotor Vip Boat Tours – Blue Cave 3
- Kotor: Blue Cave,Submarine Tunnel, Lady Rock
- Koursaros Yachting
- Krabi Bliss
- Krabi Private Boat Tour
- Krabi Sunset Cruises
- Kraken Charters
- Krist Boat Trips
- Kristal Boat Escursioni
- Ksamil Water Sport
- Kussi Sea Excursions
- L&A Yachting – Axopar 25
- L&A Yachting – Bayliner M17
- LA TORA – Slide, Splash & Celebrate!
- LBISportfishing
- LEAHKLEA Charters
- LFG Fishing Charters
- LULIMAR Charter
- LY Charters
- La Bella Verde – Eco-Sustainable Catamaran
- La Boca Sailing Expeditions
- La Caletta – Minicruise Gulf of Orosei
- La Diosa Del Mar, Costa Maya
- La Isla Tour Cabo – Deva
- La Ketch – Water Sports Boat Experience
- La Madrugada Sailing
- La Marinada
- La Menta Boattrips
- La Morrita Private Yacht
- La Otra Fishing PV
- La Patrona Sportfisher 36'
- La Rana Cancun Sunset Tours
- La Santa Maria Catamaran
- La Serena Charter & Boats
- La Vie Yacht
- La vie en bleu sailing on a Pogo
- LaLa Boat Charter
- Lady Kokomo Boat Rentals – 27’ Double Decker
- Lady May Charters
- Lady O Charters – Persuit 32
- Lady Virginia Boat Trip
- Ladyboss Charter
- Laganas Private Cruises – EIRINI
- Laganas Private Cruises – ELLEN
- Lagoon Charter – Lagoon 440
- Lagoon Charter – Lagoon 450
- Lagoon Pontoons of Lake Wales
- Lagoon Pontoons of Saint Pete Beach
- Lagoon Pontoons of Saint Pete Beach
- Lagoon Pontoons of Saint Pete Beach