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By Joshua Tyler
| Updated
After years of being watered down by modern over-sensitivity, science fiction may be on the verge of a raunchy, sexy renaissance. Before it gets here, let’s take a look back at the genre’s wildest, most libidinous entries of the past with a list of the sexiest movies SF has ever produced.
I’m ranking them in order by how straight-up raunchy, sexy, and exciting each movie is. Most of them are rated R or higher, so be warned that this list of sci-fi movies goes hard.
14. Earth Girls Are Easy
Earth Girls Are Easy is the neon-haired, pastel-soaked collision of sci-fi and ‘80s lust. When three furry aliens crash-land in the San Fernando Valley, a lonely manicurist played by Geena Davis shaves them down to reveal Jeff Goldblum, Damon Wayans, and Jim Carrey in full heartthrob mode.
What follows is an intergalactic makeover comedy where sexual curiosity and mall culture blend into a bubblegum fever dream. It’s raunchy, ridiculous, and way too fun to be subtle.
13. Under the Skin (2013)
In Under the Skin, Scarlett Johansson plays an alien entity that assumes the form of a seductive woman. Cruising the streets of Scotland, she lures unsuspecting men into her van, ultimately leading them to their doom in an otherworldly void. Oddly enough, she must remove all her clothes before she’s able to consume her victims, resulting in a pattern where Scarlett Johansson prowls the streets and then takes her clothes off while walking seductively into nothingness.
Under the Skin tries to appear more high-minded than that premise suggests, and maybe it is, but there’s no denying that it’s the film’s salacious content that got people buying a ticket.
12. The Fifth Element (1997)
The Fifth Element is Luc Besson’s 1997 brightly colored space opera of chaos, couture, and cosmic lust.
Bruce Willis plays a weary cabbie who literally catches the perfect woman, Milla Jovovich’s Leeloo, an initially nude, genetically engineered savior wrapped in white straps and destiny. Together they race to stop a planet-eating evil while flirting their way through the galaxy’s weirdest fashion show.
It’s sleek, absurd, and pulsating with sexual energy. The film earns its spot on this list because it fuses high-concept sci-fi with fetish aesthetics, part space epic, part erotic fantasy, and 100% committed to the horny glory of the future.
11. Zardoz (1974)
Zardoz is a 1974 science fiction film directed by John Boorman and set in a post-apocalyptic future. In this world, the brutish “Exterminators” oppress the masses and worship a giant flying stone head called Zardoz. The head spews guns and dictates that they kill to reduce the population. Sean Connery stars as Zed, an Exterminator who discovers the truth behind Zardoz and escapes to the parallel and decadent society of the Eternals.
It’s the 70s, so the Eternals don’t wear a lot of clothes, and things only get more wild and sex-obsessed after Zed’s testosterone-soaked arrival disrupts their static society. It leads to revelation, chaos, and, ultimately, a lot of hedonistic 1970s weirdness.
10. Weird Science (1985)
The plot of Weird Science is that two teenage nerds who can’t land a girlfriend decide to do the next best thing: use a computer and create their own floppy disk Frankenstein of a woman. The more they fall in love with their digital hottie, the less likely it becomes that these geeky teens will connect with the real world.
Weird Science is the kind of raunchy teen comedy no one makes anymore. Critics would likely decry our two main characters as terminally online incels, and everyone would make fun of their efforts to bring a glorified chatbot to life. But the movie embraces its sexy premise and goes all the way. And Kelly LeBrock is one of the hottest movie hotties ever to stand in a doorway in her underwear, on screen.
9. Planet Terror (2007)
Planet Terror is Robert Rodriguez’s 2007 love letter to grindhouse trash, soaked in gore, gunfire, and sweat. When a biochemical weapon turns a Texas town into a leaking pustule of mutants, one-legged stripper Cherry Darling (Rose McGowan) straps on a machine-gun prosthetic and becomes the hottest killing machine alive.
It’s a delirious mash-up of body horror and sexual spectacle, blood-slicked, tongue-in-cheek, and proud of its sleaze. It combines pin-up style allure, fetishized violence, and campy bravado in a way only Rodriguez could make both hilarious and weirdly empowering.
8. The Man Who Fell to Earth (1976)
The Man Who Fell to Earth centers on an extraterrestrial named Thomas Jerome Newton, played by the always sexually charged David Bowie, who comes to Earth from a distant drought-stricken planet.
Disguised as a human, Newton uses advanced alien technology to amass a vast fortune through patenting his inventions. He then is SUPPOSED to spend his wealth on building a spacecraft to transport water back to his home planet to save his family.
Instead, he becomes enamored with living the life of a playboy, and gets lost in a world of endless 1970s style orgies and excess.
7. Species (1995)
In 1995’s Species, Scientists at a SETI lab splice human DNA with alien code from a cosmic message. The result? A rapidly growing hybrid girl who looks innocent but packs superhuman strength, smarts, and a killer instinct.
Sil, played by stunning 19-year-old model Natasha Henstridge, busts out, morphs into adult form, and hits L.A. on a prowl to mate and breed an unstoppable species. Her drive becomes primal, seductive, and deadly. She lures men, then murders them if they don’t measure up.
The hottest babe on the planet is a seductive predator who doesn’t like wearing clothes. That’s the hook. Obviously, that’s going to be awesome.
6. Barbarella (1968)
Barbarella stars Jane Fonda as a solo space pilot traveling the cosmos in a distant future. She’s sent to track down a galactic villain with plans to bring back violence and warfare. Early on in her journey, she discovers that this sex thing humans don’t do anymore is actually pretty good.
Barbarella’s reputation as a steamy space babe movie is earned. There’s more to it than that, but getting Jane Fonda undressed and selling her as super hot is a core component of the movie’s mission. Luckily, since it stars young Jane Fonda, that was pretty easy to do.
The interesting thing about Barbarella is that though it does contain a decent amount of skin, it’s done in such a naive and innocent way that at times, you almost don’t notice. It’s more about the overall forbidden vibe of the film.
5. Frankenhooker (1990)
Frankenhooker (1990) is the sleaziest, smartest Frankenstein riff you’ll ever see. When Jeffrey’s fiancée dies in a freak lawnmower accident, the grieving nerd does what any self-respecting mad scientist would: rebuilds her from the body parts of exploded prostitutes.
The result is a purple-wigged sex bomb who hits the streets screaming “Wanna date?” while short-circuiting johns. It’s raunchy, grotesque, and weirdly heartfelt, a neon grindhouse satire of both sex and science that weaponizes nudity and erotic absurdity as commentary.
4. The Substance (2024)
In The Substance, a frequently unclothed Demi Moore plays an aging actress who injects herself with “the Substance,” a biotech miracle that grows a younger, sexier version of herself. That younger version is played by an even more frequently unclothed Margaret Qualley, who personifies weaponized body perfection as she shakes her hips.
Youth comes at a cost: one body must rest while the other lives, and jealousy turns the experiment into a slow-motion body-horror meltdown. It’s explicit, brutal, and dripping with excessive skin and erotic menace.
3. Robotrix (1991)
The 1991 Chinese SF movie Robotrix is the ultimate merging of the nerd obsession with robots and the sometimes creepy nerd libido. It’s the story of a sexy lady cop, tuned into a robot. She teams up with another lady robot in pursuit of a rogue, insatiable male robot.
The movie opens with a bathhouse scene in which a prince bathes with a variety of unclothed Chinese women. It quickly leaps into a world of silly Asian martial arts, and a variety of excuses to get well-proportioned women on screen in nothing but a murken.
Along the way, the police lose their heads a bit and use one of the hot lady robots to open a highly successful brothel, and Robotrix is probably more a piece of full-on, ultra-low-budget Skinemax sleaze than it is an actual science fiction movie.
2. Heavy Metal (1981)
1981’s Heavy Metal is what happens when a stoner’s sketchbook and a sci-fi anthology collide at warp speed. A glowing green orb of evil called the Loc-Nar links a series of wildly animated tales filled with space warriors, nude goddesses, and heavy-guitar apocalypse.
It’s fantasy rendered with surprising artistry. Think Frazetta meets Star Wars with way more boobs. Every segment oozes with pulpy erotic energy, where spaceships and sexuality share equal screen time. It treats sci-fi as both spectacle and seduction, blending nudity, violence, and cosmic weirdness into one gloriously raunchy cartoon fever dream.
1. Lifeforce (1985)
The 1985 movie Lifeforce begins with a naked girl in a box and it ends with a sex scene so explosive it destroys a cathedral and sends a race of alien vampires running for their lives. In between those bookends, Lifeforce is one of the wildest, most unique, most incredible science fiction movies almost no one has seen.
A mission to explore Halley’s Comet results in an alien vampire who looks exactly like one of the most beautiful women in the world wandering around our planet without clothes on, luring in men, and sucking the life out of them. At one point, she briefly takes the form of Star Trek star Patrick Stewart, and despite now being a bald academic, she’s so sexy that people still want to make out with her, at their peril.
Movies like Species and Under the Skin owe everything to Lifeforce, the original super hot alien babe sucks the life out of the world movie. And those copies are just copies. They can’t hold a candle to Lifeforce. It’s not just one of the sexiest sci-fi movies ever made; it’s also one of the best sci-fi movies on this list. It belongs at the top.
