Science Fiction 4k Wallpapers [ 70+ 4K Ultra HD Wallpapers ]

4K Ultra HD PC desktop wallpaper: a science fiction combat mech stands on rocky terrain at sunset overlooking a ruined outpost and distant mountains.

1

4K+ Ultra HD (4008x2256)

358

Created By

Tags Mech Science Fiction

4K Ultra HD sci‑fi spaceship corridor: dim, wet metal passage with armored figures, glowing consoles and a distant engine core — PC desktop wallpaper background.

3

4K+ Ultra HD (4008x2256)

356

Created By

Tags Corridor Science Fiction Spaceship

Sci-fi spaceship entering a glowing warp drive portal in deep space, 4K Ultra HD PC desktop wallpaper and background.

1

4K+ Ultra HD (3840x2160)

66

Created By

Tags Warp Drive Spaceship Space Science Fiction Portal

A 4K Ultra HD wallpaper featuring Spock, showcasing his iconic Vulcan features and starfleet uniform as he stands poised with a phaser in hand.

6

4K+ Ultra HD (4344x2472)

1,117

Created By

Tags Spock Star Trek Science Fiction Cosplay

Alien Science Fiction 4K Ultra HD PC desktop wallpaper/background: hooded figure surrounded by towering wireframe-skinned humanoid aliens with glowing eyes and halo-like lattices under a stormy, reflective sky.

4K+ Ultra HD (4032x2304)

119

Created By

Tags Alien Science Fiction

Sleepcore spaceship scene: a sleeping figure curled on a cushioned nest atop a circular starship drifting through sunlit clouds — 4K Ultra HD science fiction PC desktop wallpaper

1

4K+ Ultra HD (4032x2304)

139

Created By

CelestialCanvas

Tags Sleepcore Spaceship Science Fiction

Retro-futuristic science fiction city with a sleek futuristic car on an elevated roadway, 4K Ultra HD PC desktop wallpaper.

4K+ Ultra HD (3840x2160)

32

Created By

Tags Retro Futurism Futuristic Car Science Fiction Futuristic City

Ordinary Oddness sci-fi video game art of a man floating above a futuristic city, 5K Ultra HD PC desktop wallpaper and background.

4K+ Ultra HD (5504x3072)

23

Shared By

Tags Ordinary Oddness Science Fiction Video Game Futuristic City

Once Human sci-fi video game 4K Ultra HD PC desktop wallpaper featuring an armed survivor facing a towering alien structure across the water.

4K+ Ultra HD (3840x2160)

29

Shared By

Tags Once Human Science Fiction Video Game

Star Wars: Galactic Racer sci-fi aircraft racing above snowy clouds, 4K Ultra HD PC desktop wallpaper and background.

4K+ Ultra HD (3840x2160)

137

Shared By

Tags Star Wars: Galactic Racer Science Fiction Aircraft Snow Star Wars

Helldivers 2 sci-fi soldiers in armor wielding a futuristic weapon in a snowy mountain battle, 5K Ultra HD PC desktop wallpaper.

4K+ Ultra HD (5504x3072)

66

Shared By

Tags Helldivers 2 Science Fiction Soldier Armor Weapon

Deadman Danny, a sci-fi warrior from Deadlock (2024), amid an explosive battle in 4K Ultra HD PC desktop wallpaper.

4K+ Ultra HD (3840x2160)

68

Shared By

Tags Deadlock (2024) Science Fiction Warrior

Helldivers 2 sci-fi soldier battles a towering alien in an explosive battlefield, 5K Ultra HD PC desktop wallpaper and background.

4K+ Ultra HD (5504x3072)

38

Shared By

Tags Helldivers 2 Science Fiction Soldier Alien Battle

Mass Effect sci-fi soldiers and alien companions beneath a glowing blue energy field, 5K Ultra HD PC desktop wallpaper and background.

1

4K+ Ultra HD (5504x3072)

38

Created By

Tags Mass Effect Science Fiction Soldier Alien Video Game

A grumpy character with green skin and prominent eyebrows, set against a futuristic background, featured as a 4K Ultra HD PC desktop wallpaper and background.

4K+ Ultra HD (4248x2376)

592

Created By

Tags Grumpy Alien Science Fiction