Every 3D-printing design contest worth entering, closing soonest first.

27 contests are open right now across 7 platforms, sorted by deadline. 10 close within 7 days. See closing soon.

The New Founders weekly: contests closing this week, coming soon. Preview the signup page.

• ColorMix Models

  Printables Ends Oct 18, 2026 (UTC) · ~95 entries

  Prusa-run challenge for models using ColorMix multicolor blending. Prize list is on the Printables contest page.

  2 days leftto enter

• Hot Air Balloon Design Contest

  Creality Cloud Ends Oct 18, 2026 (UTC) · ~137 entries

  About $2,350 in Creality credits, plus points and featured exposure for winners.

  2 days leftto enter

• Logitech MX Keyboard Adaptive Add-ons

  Printables Ends Oct 19, 2026 (UTC) · ~190 entries

  Top prize is a Prusa CORE One+ kit plus a 500 euro Logitech store voucher; 2nd and 3rd get Prusameter credit and smaller vouchers.

  3 days leftto enter

• Build Knowledge: Kit Card Design Contest (hosted by @berri3D)

  MakerWorld Ends Oct 19, 2026 (UTC) · ~152 entries

  Ten winners. Top three get about $50-$150 in MakerWorld points plus Bambu Lab accessories; seven runners-up get tools and a printable trophy file.

  3 days leftto enter

• Color Unleashed: Light Up Halloween Night

  Snapmaker Ends Oct 21, 2026 (UTC) · ~229 entries

  Snapmaker gift cards: $600 top prize, plus smaller cards for 2nd and 3rd tiers. Halloween theme; made for multicolor printing.

  5 days leftto enter

• Halloween 2026 Design Contest

  MakerWorld Ends Oct 21, 2026 (UTC) · ~2,271 entries

  Seasonal design contest run by MakerWorld. Prize list is on the contest page.

  5 days leftto enter

• Military Model Design Contest

  MakerOnline Ends Oct 22, 2026 (UTC) · ~101 entries

  Military-themed models (tanks, jets, ships, robots). Shared $1,250 prize pool. No firearm or working-weapon models allowed.

  6 days leftto enter

• Designer Challenge: Pegboard Wall Organizers

  Printables Ends Oct 22, 2026 (UTC) · ~430 entries

  Winner gets an Original Prusa MK4S kit; 2nd and 3rd place receive Prusameter credit.

  6 days leftto enter

• Makers Tools Challenge

  Thingiverse Ends Oct 23, 2026 (UTC) · ~94 entries

  Cash prizes: $500 / $250 / $100 for the top three. Tools, jigs and workshop storage that help makers build or fix things.

  7 days leftto enter

• Light It Up Challenge

  Thingiverse Ends Oct 23, 2026 (UTC) · ~47 entries

  Cash prizes: $500 / $250 / $100 for the top three. Lamps, LED art and anything that gives off light.

  7 days leftto enter

• Thermoformed Model Design Contest

  Creality Cloud Ends Oct 25, 2026 (UTC) · ~41 entries

  About $2,350 in Creality credits, plus points and featured exposure. Models are printed flat, heated and shaped over a mold.

  9 days leftto enter

• Vortex Stack Challenge

  Creality Cloud Ends Oct 25, 2026 (UTC) · ~15 entries

  Print-and-play challenge. Prizes include $1,000 in credits, a Creality K2 Pro and a K2 (one winner each), i7 printers for two winners, and filament spools.

  9 days leftto enter

• Fantasy World Design Contest

  MakerOnline Ends Oct 29, 2026 (UTC) · ~130 entries

  Castles-to-creatures fantasy theme. Shared $1,250 prize pool.

  13 days leftto enter

• RC Challenge

  Thingiverse Ends Oct 30, 2026 (UTC) · ~38 entries

  Cash prizes: $500 / $250 / $100 for the top three. Remote-control cars, boats and planes (no drones). Guest judge Daniel Norée.

  14 days leftto enter

• 2026 Halloween Design Contest

  MakerOnline Ends Oct 30, 2026 (UTC) · ~799 entries

  Spooky dioramas, props, characters and decorations. Host promises a bigger prize pool than usual; the amount is not given in the text.

  14 days leftto enter

• Make It Real

  NexPrint Ends Oct 30, 2026 (UTC) · ~435 entries

  Elegoo store gift cards: $300 / $200 / $100 for the top three, plus smaller cards for runners-up. Turn a picture or idea into a print.

  14 days leftto enter

• Trickster Time

  NexPrint Ends Oct 30, 2026 (UTC) · ~353 entries

  Elegoo store gift cards: $300 / $200 / $100 for the top three, plus $50 category awards and $40 cards for eight more. Playful Halloween prints.

  14 days leftto enter

• Master Challenge: Rocket Revolution Design Contest

  MakerWorld Ends Oct 31, 2026 (UTC) · ~195 entries

  Rocket-themed Master Challenge from MakerWorld. Prize list is on the contest page.

  15 days leftto enter

• 2026 Halloween Design Contest

  Creality Cloud Ends Oct 31, 2026 (UTC) · ~1,300 entries

  About $3,600 in contest rewards, $2,200 in social-media rewards and a $5,000 shopping discount pool.

  15 days leftto enter

• Thrustmaster Custom Shifter Knob

  Printables Ends Nov 4, 2026 (UTC) · ~204 entries

  Sim-racing shifter knob challenge. Prize details were not confirmed; check the Printables contest page.

  19 days leftto enter

• Mecha & Robotics Design Contest

  MakerOnline Ends Nov 5, 2026 (UTC) · ~38 entries

  Mecha, robots and articulated machines. Prizes of up to $350 for top designs.

  20 days leftto enter

• Board Game Design Contest

  MakerOnline Ends Nov 5, 2026 (UTC) · ~0 entries

  Educational board games, puzzles, mechanical games and game accessories. Shared $1,250 prize pool.

  20 days leftto enter

• Green&Hydro

  Thingiverse Ends Nov 6, 2026 (UTC) · ~24 entries

  Cash prizes: $500 / $250 / $100 for the top three. Gardening, hydroponics and plant or mushroom growing gear.

  21 days leftto enter

• Multicolor 3D Model Design Contest

  Creality Cloud Ends Nov 8, 2026 (UTC) · ~407 entries

  Five SPARKX i8 printers up for grabs, plus about $1,600 in credits. Good fit for multicolor printers.

  23 days leftto enter

• Open Board Game Challenge

  Thingiverse Ends Nov 13, 2026 (UTC) · ~27 entries

  Cash prizes: $500 / $250 / $100 for the top three. New board games, pieces, trays and accessories.

  28 days leftto enter

• Make for Good: Accessibility Design Contest

  MakerWorld Ends Nov 15, 2026 (UTC) · ~349 entries

  Assistive-design contest. One Bambu Lab A1 Combo per design brief, plus a Bambu Lab S1 3D scanner special award.

  30 days leftto enter

• Autumn Nest

  NexPrint Ends Nov 15, 2026 (UTC) · ~70 entries

  Elegoo store gift cards: $300 / $200 / $100 for the top three, plus $50 category awards and $40 cards for eight more. Autumn forest home decor.

  30 days leftto enter

List last built Oct 16, 2026 (UTC). Verified against each platform's public contest page; see each contest for its verification date.