All Boating Charters
- Captain Vasilis Boat Charters – Searay 375
- Captain Yin Yang – Snorkel, Fishing & Sunset
- Captained 51' Sea Ray Sundancer Luxury Yacht
- CaptnDiving
- Cardi Boat Sxm
- Caribbean Breeze Tours – Deep Obsession
- Caribbean Breeze Tours – Lil' Amber
- Caribbean Breeze Tours – Play Time
- Caribbean Experience
- Caribbean Sailing Cancun
- Caribbean Time Watersports
- Caribe Ossi Tours – Balsita
- Caribe Ossi Tours – Vianska
- Caribe Sun Adventures
- Caribe Sun Adventures
- Caribeño Boat
- Carina Yacht Rhodes
- Carlina Yacht Private Tour
- Carly's Boat Trip
- Carolann P Fishing Charters
- Carolena Charters
- Carolina Catch Co.
- Carolina Charters
- Carolina Coast Life
- Carolina Fishing Tours in Cabos
- Carolina Girl
- Carolina Hook N' Reel
- Carpe Diem Charters
- Carpediem
- Carrillo Team
- Cartagena Private Boat Trips
- Casa Oliva Nera – Lullaby
- Casa Sul Mare
- Cascais Boat Tours with Dreamboats
- Cascais: Exclusive private boat tour
- Casey IV Charters
- Casey Key Tiki Tours
- Casey Key Water Taxi Tours
- Cast Net Charters
- Cast Out Fishing Charters
- Castaway Charters Puerto Rico
- Castndreamz – Miami Sandbar Hopping
- Casual Fare Sailing Charters
- Casual Monday Charters – Belzona 325 CC
- Cataleya Boat Tour
- Catamaran Kikijoko
- Catamaran Magano
- Catamaran Quest
- Catamaran Quest
- Catamaran Semi-Private Classic Cruise
- Catamaran Semi-Private Luxury Cruise
- Catamaran Semi-Private Premium Cruise
- Catamaran Spinaker
- Catamaran TurTur – Bigspace
- Catamaran in Paradise
- Catania Yacht Charters
- Catarina
- Catch & Sea Charters
- Catch 1
- Catch And Cruise NC - World Cat
- Catch My Drift – Private & Exclusive Charters
- Catch and Cruise Adventures
- Catch and Cruise NC – Pursuit 3070
- Catchin In The Keys Charters
- Catching Memories Charters
- Catfishing with Capt. Mark Lawson
- Cavtat Boat Trips – Elafiti Islands
- Cay Lime Charters – 23ft Regulator
- Cay Lime Charters – Exuma
- Caye Caulker Reef Friendly Tours
- Cayman BioGlow Adventures
- Cayman Experiences - Bently
- Cayman Experiences – Searay 260 Bowrider
- Cayman Live Bait
- Cayman Luxury Adventures
- Cayman Ocean Adventures – Angel
- Cayman Sailing
- Cayman Snorkel Co
- Cayman Sun Splash Tours
- Cayman Vibes Charters
- Celestial Charter – Molinette
- Centaur Adventures
- Centaurus Yachts Charter – Dionysos 77ft
- Centaurus Yachts Charter – Etosha 58ft
- Centaurus Yachts Charter – Kronos 85ft
- Centaurus Yachts Charter – Lagoona 56ft
- Centaurus Yachts Charter – Riverside 40ft
- Centaurus Yachts Charter – Silver Creek 61ft
- Centaurus Yachts Charter – Storm 36ft
- Centaurus Yachts Charter – Thunder 36ft
- Centaurus Yachts Charter – Vassia 56ft
- Central Coast Angling
- Central Coast Angling – Traverse Bay Sunset
- Central NH Guides
- Centuria Sea Adventure
- Cerberus Boats – Bavaria 37 Sport Hardtop
- Cerberus Boats – Fun Seeker
- Cesar PV Trips
- Champagne Charters
- Champions Boat Tours