All Boating Charters
- Jayson Tours
- Jazive Sportfishing
- Jeanneau Boat Tours
- Jeffreys Bay SCUBA Diving
- Jeliray Charter & Tours
- Jellyfish Charters
- Jeronimo Zante Cruises
- Jesse James Charters
- Jessie James Charters
- Jet Skis (By Sicily Watersports)
- JetService Ibiza – Alchemist
- JetService Ibiza – Apple
- JetService Ibiza – Aspen
- JetService Ibiza – FINI III
- JetService Ibiza – Get Shorty
- JetService Ibiza – La Gata
- JetService Ibiza – Perla
- JetService Ibiza – The New Smile
- JetService Ibiza – Vicky
- JetService Ibiza – Vicky II
- Jig is Up Charters
- Jimmy Rig Charters
- Joey Flats Everglades Eco Tours
- Johnny Quest Party Boat
- Jordan Sportfishing
- Joselin Company – Little Jade
- Joyce K Fishing Charters
- Joyride Charters
- Jpep Guiding
- Juda Sea Tours Island Cruises
- Julian Boat Tours
- Just Add Water Charters LLC
- Just B Cause Charters Inc
- Just Ducky Charters
- Just Fish
- Just Livin The Dream Charters 1 Dolphin Trip
- Just Livin the Dream Charters 2 Dolphin trip
- Just Reel
- Just Right Florida Charters
- Just a toy charter
- K&O
- KAÇAMAKYACHTİNG
- KIGO Charter
- KOKA Charters
- KONSTANTINOS, PELION BOATS
- Kalos 5 terre Portofino di
- Kamarina 505 (By Sicily Watersports)
- Kan Kan Water Tours
- Kanpai Charter Malta
- Karen Ann Charters
- Karibe Sailing & Snorkeling Tours
- Karma Boat Cruises – Full Day Coastal Escape
- Karma Boat Cruises – Private Yacht in Lagos
- Karma Charters
- Katerina Sailing
- Katfish Kayak And Fishing Charters
- Katina d.o.o
- Kavelas Tours
- Kawi Voyage - Galaxy 1
- Kayak Green Vision
- Kayak Tour & Salsa Experience: Condado Beach
- Kaštela Nautic – Exclusive Sailing Experience
- Ke Pasa Charter Tour
- Keel N Time Charters
- Keep It Reel Private Charters
- Keepin It Reel Charters
- Kestrel Warrior – Boat Tours
- Key Largo Captain Steve
- Key Largo Tiki Tours
- Key West Boating Connection
- Key to the Sea – Private Parasailing Tour
- Key to the Sea – Sea Ray Boat Charter
- KeyZ Charters
- Keys Aquatic Adventures
- Keys Boat Tours
- Keys Time Charters, Inc.
- Kilina Company
- Kilo Whiskey Charters
- Kimbara Travel – Marcela Teresa
- Kimbara Travel – Private Yacht Experience
- Kisite Discovery Safaris
- Kite Hatteras
- Klobuk Travel – 40' Leader
- Klobuk Travel – 42' Antares
- Knee Deep Charters
- Knetmarine LLC
- Knot Tell'n Charters
- Knot Tied Down Charters
- Knot Tuggin Sportfishing
- Knot Wish’n Custom Charters
- Knotical Adventures Two LLC
- Kokomo Keys Charters Veteran Owned
- Komani Lake & Shala River Private Boat Tour
- Komani Lake to Shala River Boat Tour
- Komodo Amazing Destination
- Komodo Boat Charter
- Konadice Sportfishing
- Kool Kat Watersports
- Korcula Charter - Boat tour
- Korsaro Boat – Private & Group Tours