Lv427 Designs
Modeler / Company Name
Short Description
They create starship/star base corridor sci-fi tiles.
M3Studios
Modeler / Company Name
Short Description
M3 Studios creates a number of terrain pieces for scifi to historical time periods. His latest series, Atomic Shelter looks great.
Masterwork Tools
Modeler / Company Name
Short Description
Masterwork Tools was founded by Devon Jones. Evan Carothers (EC3D) also releases items through it. His biggest claim to fame, is the incredible Open Forge set of terrain. These are fully free (from Thingiverse) dungeon tiles. They are Openlock compatible and the bases even have spots to put in bucky ball type magnets to hold them together. (Personally, I use these bases, and scale them up to wylock scale).

Beyond the Open Forge tiles, he has all kinds of other terrain pieces as well.
Thingiverse Profile
Mean Gummy Lizard Production
Modeler / Company Name
Short Description
Their latest kickstarter features a number of desert dwellings in 28 - 32mm format.
MGStudio – MiniGrinder Studio
Modeler / Company Name
Short Description
MiniGrinder Studio makes a selection of hex-based terrain. It can be used for most kinds of games.
Michael Novelo
Modeler / Company Name
Short Description
Digital 3D Artist from Germany. I create Game Assets for Game Engines like Unity3D and Unreal-Engine.
Miniables / Maurizio Motta
Modeler / Company Name
Short Description
Maurizio Motta is a wargamer... First... But than I'm also a mechanical designer. I live in the northern Italy and I work for a tool industry. As a wargamer I love to play games related to conflicts and history, however as a designer I also love to make my personal scenery
Website
Long Description

https://www.kickstarter.com/projects/panz3rdesinger/printable-scenery-1-285-and-6mm-models-for-modern-conflicts?ref=makerfun3d
https://www.kickstarter.com/projects/panz3rdesinger/3d-printable-scenery-1-285-and-6mm-cold-war-eastern-europe?ref=makerfun3d.com

Modular Games HQ LLC
Modeler / Company Name
Short Description
Modular Games HQ LLC is a modern gaming company set to revolutionize the industry. Our aim is to offer top-of-the-line miniatures with immersive game systems that are both challenging and rewarding to players.
Mystic Realm – Act 3: Lolit the Mycelium Kingdom Kickstarter!
Short Description
Maker of scatter terrain for fantasy games, though some would work for modern caves/sewers as well. Check out their YouTube channel for videos on prepping and painting their files. (These videos would work for any natural terrain like this)
YouTube Channel:
Necrossia Wargame Terrain
Modeler / Company Name
Short Description
So far, they have released their first board of terrain featuring Necron inspired pieces. They plan to expand their line and have the philosophy that the terrain is the 3rd army.
Website
Thingiverse Profile
Nik F. Terrain Maker
Modeler / Company Name
Short Description
So far his first Kickstarter features modular walls, doors, and windows for a sci-fi setting.
Ollie Deluce
Modeler / Company Name
Short Description
Oliver Deluce, engineer, avid wargamer, 3D designer and printer.
Open Dungeon Tiles
Modeler / Company Name
Short Description
Free Dungeon Tiles
Pauls3dModels
Modeler / Company Name
Short Description
Paul makes a number of HO scale, old west printable scenery (Buildings, and other pieces).