- Giant Cowbird
- Glittering-throated Emerald
- Glossy Ibis
- Golden-headed Manakin
- Golden-spangled Piculet
- Golden-winged Parakeet
- Grassland Sparrow
- Great-billed Hermit
- Great Black Hawk
- Great Egret
- Great Horned Owl
- Great Kiskadee
- Great Potoo
- Greater Ani
- Greater Yellow-headed Vulture
- Greater Yellowlegs
- Green-backed Trogon
- Green-rumped Parrotlet
- Green-tailed Goldenthroat
- Green-tailed Jacamar
- Green-throated Mango
- Green Aracari
- Green Ibis
- Green Kingfisher
- Grey-breasted Crake
- Grey-breasted Martin
- Grey-breasted Sabrewing
- Grey-cowled Wood Rail
- Grey-crowned Flatbill
- Grey-headed Kite
- Grey-lined Hawk
- Grey-winged Trumpeter
- Grey Antbird
- Grey Kingbird
- Grey Plover
- Greyish Mourner
- Guianan Puffbird
- Guianan Toucanet
- Guianan Trogon
- Guianan Tyrannulet
- Guianan Warbling Antbird