List of fictional alien species: N

Name	Source	Type
Naalu	Twilight Imperium	serpentine telepaths
Naglon	Doctor Who	Humanoid
Nairnama	Independence War, aka I-War
Namekian	Dragon Ball	Humanoid
Naram	Renegade Legion	Humanoid
Narn	Babylon 5	Humanoid
Nhar-Gh'Ok	Invader Zim	Humanoid. Resembling babies.
Na'vi	Avatar (2009 film)	Blue Humanoid
Nausicaans	Star Trek
Neadlehead	Win, Lose and Kaboom
Nosedeenian	Ben 10
Nebari	Farscape	Humanoid
Nebular	Calvin and Hobbes
Necris	Unreal tournament
Necrons	Warhammer 40,000
Necrotons	Mork and Mindy	Humanoid
Nemet	C. J. Cherryh's Alliance-Union universe
Nephilim	Wing Commander: Prophecy
Neptunians	Futurama	Humanoid
Neutrals	Futurama	Humanoid
New Gods	The Fourth World in DC Comics
New Orions	Master of Orion III
Nicassar	Warhammer 40,000
Niea	Niea 7
Nietzscheans	Andromeda
Nihilanth	Half-Life
Nimbuloids	Ascendancy
N'Kull	Advent Rising
Nitros Oxide	Crash Bandicoot series
Nodulians	Tracker
Nomads	Freelancer
Nomes	Terry Pratchett's The Bromeliad
Nommo	Master of Orion
N'Orr	Twilight Imperium	water-efficient warrior insectoids
Novus	Universe at War
Nox	Stargate SG-1	Humanoid
Nyronds	passim in the works of Zander Nyrond; occasionally in those of his "brother" Soren