- Nankeen Kestrel
- Napoleon Spider
- Narcissus Bulb Fly
- Narrow-headed Marsh Fly
- Narrow-winged Grey
- Nashville Warbler
- Natterjack Toad
- Needham's Skimmer
- Neon Skimmer
- Neotropic Cormorant
- Nessus Sphinx
- Nettle weevil
- Nevada Bumble Bee
- New Holland Honeyeater
- New Zealand Cutworm
- New Zealand Pigeon
- Nine-spotted Moth
- Noble Dorid
- Noble False Widow
- Noisy Miner
- Nomad
- North American Common Gray
- North American Common Water Strider
- North American Green Frog
- North American Luna Moth
- North American Porcupine
- North American Racer
- North American River Otter
- North American Wheel Bug
- Northeastern Hammertail
- Northern Alligator Lizard
- Northern Amber Bumble Bee
- Northern Azure
- Northern Bobwhite
- Northern Broken-Dash
- Northern Cardinal
- Northern Chamois
- Northern Cloudywing
- Northern Cottonmouth
- Northern Crescent
- Northern Cricket Frog
- Northern Curly-tailed Lizard
- Northern Dune Tiger Beetle
- Northern Elephant Seal
- Northern Flatid Planthopper
- Northern Flicker
- Northern fruit bug
- Northern Fulmar
- Northern Gannet
- Northern Harrier
- Northern House Wren
- Northern Jacana
- Northern Kelp Crab
- Northern Lapwing
- Northern Leopard Frog
- Northern Mockingbird
- Northern Nutcracker
- Northern Paper Wasp
- Northern Parula
- Northern Pearly-eye
- Northern Pike
- Northern Pintail
- Northern Plushback
- Northern Red-bellied Cooter
- Northern Rough-winged Swallow
- Northern Short-tailed Shrew
- Northern Shoveler
- Northern Shrike
- Northern Slimy Salamander
- Northern Two-lined Salamander
- Northern Walkingstick
- Northern Waterthrush
- Northern Wheatear
- Northern White-breasted Hedgehog
- Northern Yellow Warbler
- Northwestern Garter Snake
- Nosy Pill Woodlouse
- Nut-Tree Tussock
- Nutmeg Moth
- Nuttall's Cockle
- Nuttall's Woodpecker