All Boating Charters
- Giuseppe Serpe (PEPPINO)
- Gladiator Sportfishing
- Glass Action Charters
- Glass Action Charters 2
- Glass Bottom Adventures
- Glass Bottom Boat With Slide & Dive Platform
- Glass Bottom Boats of Islamorada
- Glassbottom Boat, Snorkeling and Pig Beach
- Global Sailing Colombia
- Go Adventure Hawaii
- Go Boating – Karel 480 Open
- Go By Yacht
- Go Deep Sportfishing
- GoBoating - Attack500
- GoBoating - Viper Bullet650
- Godfather Excursions
- Gof - Waves Of Adventure
- Gold Coast Eco Tours
- Gold Star Boat Rental
- Golden Boat Tours – Caves, Beaches, Swimming
- Golden Dolphin Speedboats – Nireus 550
- Golden Dolphin Speedboats – Pikilos 9
- Golden Dream Boat Tours
- Golden Reef PR
- Golden Wake Charters
- Golfo Dulce Tour Operador
- Goliath Charters
- Gone Fishin' Guide Service LLC
- Gone Fishing Charters
- Gone Native Motor Cruiser
- Gone Sailing Adventures
- Goober Time Guide Service
- Good Catch Costa Rica
- Good Medicine La Paz Charters
- Good Mojo Charters
- Good Reason Tours
- Good Time Charters
- Good Times Fishing Adventures
- Good Times Key West 24’ Center Console.
- Good Times Key West 35’ Offshore Express
- Good Times Water Sports
- Good Times Yachts
- Good Vibes Tiki Cruises – Dewey & Rehoboth
- Good Vibes Tiki Cruises – Ocean City, MD
- GoodTimez Boat Charters
- Gosailto – 22' Sailing Experience
- Got Stryper’s Chatham Adventure Tours
- Got Stryper’s Chatham Eco Tours
- Got'em Fishing Charters and Tours
- Gotta Believe Charters
- Gozo & Comino Private boat charter
- Gozo, Comino Blue Lagoon & Caves – Jean Luke
- Gozo, Comino Blue Lagoon & Caves –Julie Pearl
- Gozzo 35 – Sorrento Sea Escape
- Gozzo 9 Cabin – Capri Private Tour
- Gozzo Christian
- Grace Yacht Palermo
- Gracebay Adventures – Good Dayz
- Graham Finale Water Tours
- Graham Finale Water Tours
- Gran Jefe II
- Gran Monarca
- Grand Acar
- Grand Admiral - Ultimate Luxury Cruiser
- Grand Little Miracles
- Grand Sea Discovery Co., Ltd.
- Grandluxe Charters – Chaparral 250 Suncoast
- Grandluxe Charters – Yamaha OBX
- Grassi Junior - Fratelli Aprea 32
- Grassi Junior - Fratelli Aprea 36
- Gratitude Charters – Luxury Private Charter
- Gratus Rent a Boat Zadar – Gratus
- Gratus Rent a Boat Zadar – Gratus 2
- Gray Line Croatia
- Great Daye Adventures
- Green Bay Group
- Green Bay Watersports & Wake Academy – Malibu
- Green Bay Watersports & Wake Academy – X-Star
- Green Flash Charters
- Green Flash Charters
- GreenBreeze – Skippered Yacht Experiences
- Gregis Charters
- Grillo Sunset tour!
- Gringo
- Grocery Gettin Charters LLC
- Guanacaste Adventure Tours
- Guardian Charters
- Guevara Tours Belize
- Guided Creek Cat Tour
- Guided Fjord Tours – Princess of the Fjords
- Guided Fjord Tours – RIB Embla
- Guided Kayak Experience
- Guided Mini Boat Adventure
- Gulet Broker – Sirena
- Gulf Breeze Adventures
- Gulf Coast Boat Tours – Avalon 2538
- Gulf Coast Boat Tours – Bennington 24'
- Gulf Coast Boat Tours – Cobia 24'
- Gulf Coast Excursions
- Gulf Coast Guide