- Gabon Coucal
- Gabon Woodpecker
- Garden Sunbird
- Giant Coua
- Giant Kingfisher
- Giant Nuthatch
- Gilded Barbet
- Glossy-black Thrush
- Golden-backed Weaver
- Golden-naped Woodpecker
- Golden-plumed Parakeet
- Golden-throated Barbet
- Golden-whiskered Barbet
- Golden Nightjar
- Goldie's Lorikeet
- Gould's Petrel
- Grassland Yellow Finch
- Gray's Grasshopper Warbler
- Great-billed Heron
- Great-billed Kingfisher
- Great-winged Petrel
- Great Auk
- Great Barbet
- Great Hanging Parrot
- Great Hornbill
- Great Inca Finch
- Great Jacamar
- Great Spotted Cuckoo
- Great Spotted Kiwi
- Great Spotted Woodpecker
- Greater Blue-eared Starling
- Greater Crested Tern
- Greater Double-collared Sunbird
- Greater Racket-tailed Drongo
- Greater Roadrunner
- Greater Yellow Finch
- Green-and-rufous Kingfisher
- Green-backed Kingfisher
- Green-billed Coucal
- Green-cheeked Parakeet
- Green-eared Barbet
- Green-headed Oriole
- Green-headed Sunbird
- Green-tailed Jacamar
- Green-tailed Sunbird
- Green-throated Sunbird
- Green Barbet
- Green Barbet (woodwardi)
- Green Iora
- Green Kingfisher
- Green Peafowl
- Greenish Warbler
- Grey-backed Thrush
- Grey-bellied Cuckoo
- Grey-bellied Hawk
- Grey-cheeked Green Pigeon
- Grey-cheeked Thrush
- Grey-crowned Woodpecker
- Grey-headed Albatross
- Grey-headed Broadbill
- Grey-headed Kingfisher
- Grey-headed Nigrita
- Grey-hooded Sierra Finch
- Grey-sided Thrush
- Grey-striped Spurfowl
- Grey-throated Barbet
- Grey-winged Blackbird
- Grey Bush Chat
- Grey Ground Thrush
- Grey Noddy
- Grey Parrot
- Grey Sunbird
- Grey Wagtail
- Greyish Baywing
- Groundscraper Thrush
- Guadalupe Storm Petrel
- Guaiabero
- Guam Kingfisher
- Guam Rail
- Guianan Puffbird