Science Fiction Free Paper Models

Bastelbogen
Black Mesa Transit System - Paper Model vehicle from the Half-Life game. Also has free paper model of Kame House from Dragonball Z.
Chthulhu's Paper Models - Flying Saucer, Shuttle Pod and more!
Cut & Paste Sci-Fi - Martian TriPod, R2-D2, Sevships, The Day the
Earth Stood Still free paper models.
DPileggi's Picks - Disney's WALL-E by Gary Pilsworth. Babylon 5 Vorlon Fighter, Sentri Class Interceptor, Heavy Fighter, Hyperion Class Heavy Cruiser, Starfury and more.
Domatine Paper Models - Surak Class Ship, Mean Machine, Space 1999 Eagle free paper model from the popular science fiction series.
Dr. Who Paper Models - from Paper Miniatures Annex
Dr. Who - The Ultimate Dalek Factory
Entdecker Typ II / Saturn-Klasse Paper Model - You need to print
1 of the Bogen A and 3 of the Bogen B. German site.
Erick's Models - Very nice free paper model spacecraft from Homeworld and some Star Wars paper model spacecraft.
Godzillu - Unique science fiction paper model monsters.
Independence War - From scifi simulator video game, nice.
Jules Verne Bust - Author of many science fiction classics.
Lower Hudson Valley Challenger EGift Shop - NSEA Protector,
from the movie Galaxy Quest and lots more.
MegaRanger Ship
Modular Space Toys - Very nice designs of modular and configurable starships, moonbase, spacestation, spacetrains and more.
Moonliner - Based on the Moonliner in Tommorrow Land, Disneyland
Nova Glasses - Science fiction paper model googles by Yukito Pia
One Monk Miniatures - Free monthly model. This month: Cyclops Steam Tank, at bottom of page. Very nice.
Planet of the Apes Icarus Model - Simple and nice.
Rosie Retrorocket
Salvage-1 Vulture Paper Model - From the 1979 SciFi TV short lived (only 9 episodes) show starring Andy Griffith.
Serenity Firefly - at Chihuahua's free paper model site
Shado Mobiles - Free paper Models from the TV show UFO
Sheila's Papermodels - A Tangram, chess set, medieval trebuchet, doublebladed axe, spiked mace, longsword and morningstar, all very nice, especially the trebuchet. All in Download at top.
SiroccoStation - Several nice scifi paper model ships from the classic PC game Elite and sequel Frontier
SpacePort - Retro - 1953 retro spaceport diorama
Space Ship
Stargate Hako Clones - Quantum Leap and lots more
Stargate SG-1 - Stargate paper models.
Stargate SG-1 BC-303 Prometheus - Also Asgard Ship Jack O'Neill, Berliskner, F-302, BC-304 Daedalus
Tate in Space Paper Models
TechThunder Ships - Also Space Cruiser free paper models
The Work Werks
Thunderbird Paper Models - Very nice.
Tin Soldier - They offer a different free paper model every month.
Tron Light Cycle
Tron Recognizer
WarHawk - Papercraft vehicles from the Playstation game

Robots, Mechs, Gundam, Manga Paper Models

Anime Mania - Very nice.
Blue Mech - Also a cyclops paper model robot
Build your own SMIDSY
CAW's Workshop - Several models of robots and spacecraft.
FireBug Mech
Giant Robo-6
HedKase Paper Toys - New paper toy every week.
Herbie the Robot - Its in the Fun Pack Giveaway PDF
Japanese Robot
LouLou Illustrations - I love the art style of these characters:
badminton enthusiast, robot, Destroy-O-Tron robot, Hover Boarder.
Marshall Alexander - Lots of unique cute paper toy robots.
Mecachico
Mokumoku FreeCraft - Gundam robots, helmets and more..
Nerfect
Paper Mech Lab
Paper Pioneer
Paper Robots 1999 - Transformers Jetfire and Optimus Prime which actually transforms! Birdman, Magnus Style Prime, Ash robots, Spiderman and more with unique rubber band joints. Excellent.
Ready Mech - Spoof on Hal 9000: Pal 9000 among many others
Rodney, Cappy, Piper & Fender - From the animated movie "Robots"
RoboSquare - Pino, Ifbot, black Aibo and white Aibo. Cute!
Robot Paper Crafts
Sankichi Robot - Cute colorful fantasy robots.
SF Paper Craft - Gun Walker, Lens Head Recon Robot, Also Huey, Duey and Luie from Silent Running, go to Original, Gallery for more

Star Trek Paper Models

Albion Rising - Star Trek Phasors, Roustabout, TNG Enterprise NCC-1701-D. Also has Star Wars, Alien, Dr. Who and more.
Aliens Papercraft
Billy's Paper Models - U.S.S. Norway, Steamrunner Class, Nebula Class, New Orleans, Fed Shuttles 9 and 11, Borg Cubes and Sphere, Species 8472
Homespun Magixx - Klingon Disruptor and Nomad from "The Changeling" and Star Trek Travel Pod as seen in Star Trek: The Motion Picture. In Hako: Kirk, Picard and more!
Jay's Box of Sci-Fi CardToys - Very nice Star Trek CardToys: Shuttlepod, USS Excelsior, USS Titan and much more!
Ninjatoes Papercraft - Chaffee, Defiant, Rub and the Station from Star Trek Deep Space Ninefrom Star Trek Deep Space Nine and the Delta Flyer from Star Trek Voyager.
Novice Cardmodel Designer - Starships, lots, nice.
Paragon Cardmodels - Star Trek Models and Robotech & Starship Troopers Models in the "Other" menu category.
Printable Star Trek Decals - from Star Ship Modeler
Shuttle Galileo II
Star Trek TOS Bridge - Also Klingon Scout Ship, USS Defiant, Enterprise, Vulcan Shuttle,
Star Trek Computer Console
Ulrich Prahn's Star Trek Cardboard Models

Star Wars Paper Models

Alberto Modelos De Papel - Tie Fighter, Tie Interceptor & more
Jango Fett's Helmet and Obi-Wan's Light Saber
Millennium Falcon - and X-Wing Fighter
Momir Farooq's Homepage - Go to Models on left for snail tank, landspeeder, frozen Han Solo, AT-ST, AT-PT, power droid, cargo skiff, speederbike, snowspeeder and other models made for RPG games
Project Vader - Han in Carbonite, Dark Lord Maul, Dark Lord, Bounty Hunter (removable helmets, very clever!), Jawa and Yoda.
Star Wars Origami
Tie Fighter and X-Wing
TYDIRIUM Shuttle - (1:100 > scale)
Yoda with Follow Me Eyes - from yours truly!
Zam's Speeder - PDF