All Boating Charters
- Cabo Sportfishing Crew - Reel Tequila
- Cabo Texas Star
- Cabo Tour Méndez
- Caco Tours
- Caicos Catalyst Charters
- Caicos Lifestyle Yacht Charters
- Cairns Reef Snorkeling & Fishing – Aqua Cat
- Cairns Reef Snorkeling & Fishing – Serranidae
- Cairns Reef Snorkeling&Fishing – Blue Whaler
- Cajun Outcast Inshore Charters
- Cala Gonone – Minicruise Gulf of Orosei
- Calabash Fishing Fleet
- California Coastal Charters
- California Coastal Charters – SS Tartar Sauce
- Callaghan Charters
- Callion Charters
- Calypso Charters Bonaire
- Calypso Fishing Tours
- Calypso Fishing Tours – Kylee Luna
- Calypso Kayaking & Boat Tours
- Camilas Fishing Tours
- Canados 49 – Grand
- Canados 90 – Aya One
- Canados 90f - Funky Town
- Cancun All Inclusive Experience
- Cancun Sailing – Lohengrin Catamaran
- Cantamar Liveaboards – Socorro Island
- Canton Bay
- Canyon Eagle III
- Cape Ann Cruises
- Cape Coral Boating with Blind Date Charters
- Cape Lookout Charters
- Cape May Whale Watcher
- Cape Town -Sunbird
- Capers Island Wildlife Exploration
- Capri Rental
- Capri, Amalfi, Positano, & the Gulf of Naples
- Capricho Sport Fishing
- Capt Clyde
- Capt G’s Epic Excursions
- Capt. Ariel's Boating Tours – Miami
- Capt. Geoff's Sightseeing Charters
- Capt. George – Santorini Culture Cruise!
- Capt. Lou Silva
- Capt. Mike's Private Tours
- Capt. Pete Jacobsen Keys Boat Tours
- Captain Adams boat excursions
- Captain Bryan's Sail & Snorkel
- Captain Buddy’s Outdoor Adventures
- Captain Carter Charters
- Captain Chill
- Captain Christian’s Charters
- Captain Cliff Adventure Tours
- Captain Clowers Charters
- Captain Dan Morgan, LLC
- Captain Dell Boat Charters
- Captain Discovery Boat Cruises LTD
- Captain Doug Chason
- Captain Fann's Fish Advisor
- Captain Fisher Charters
- Captain Flint Boat Charters
- Captain Gregg Fishing Charters
- Captain J's Charters
- Captain J.R’s Sunset And Dolphin Tours
- Captain JB Charters Inc.
- Captain Jace Allen – Glass Bottom Boat
- Captain Jay Charters
- Captain Jeff's Excursion
- Captain Jerry's Watersports
- Captain John Cruises – Swimming & Snorkeling
- Captain Jon’s
- Captain Kota's Aquatic Excursions
- Captain Larrys Island Tours
- Captain Led Rentals - Yolo Lake Conroe
- Captain Leo's Charters
- Captain Mac
- Captain Mark Ebank's Charters
- Captain Mark's Charter Adventures
- Captain Marvin's Watersports
- Captain Matt's Tours
- Captain Morgan Charters-INSHORE
- Captain Nato's Charters
- Captain Nev's Charters And Cruises
- Captain Nev's Charters and Cruises
- Captain Offshore Fishing
- Captain Paul's Yacht Charters
- Captain Randi - Island Tours
- Captain Sandy Fink LLC
- Captain Sterling's Everglade Tours
- Captain Stu’s Charters
- Captain Yin Yang – Snorkel, Fishing & Sunset
- CaptnDiving
- Cardi Boat Sxm
- Caribbean Breeze Tours – Deep Obsession
- Caribbean Breeze Tours – Lil' Amber
- Caribbean Breeze Tours – Play Time
- Caribbean Time Watersports
- Caribe Ossi Tours – Balsita
- Caribe Ossi Tours – Vianska
- Caribe Sun Adventures