The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Mission Giver Missions (17 members)
- Mission Givers (15 members)
- Missions (148 members)
- Mixed mining (2 members)
- Mk4 Grenade images (1 member)
- MobiGlas Images (1 member)
- MobiGlas images (1 member)
- Module documentation (43 members)
- Modules required by modules (15 members)
- Modules requiring modules (27 members)
- Modules that add a tracking category (1 member)
- Modules using data (3 members)
- Mole Images (2 members)
- Mole images (60 members)
- Monthly Report images (1,040 members)
- Monthly Reports (0 members)
- Moons (75 members)
- Morningstar Helmet images (1 member)
- Morozov-SH Helmet images (1 member)
- Morozov-SH images (7 members)
- Morozov-SH set (5 members)
- Mule images (30 members)
- Mule series (0 members)
- Musashi Industrial and Starflight Concern (31 members)
- Mustang Alpha Images (75 members)
- Mustang Beta Images (27 members)
- Mustang Beta images (1 member)
- Mustang Delta Images (29 members)
- Mustang Gamma Images (23 members)
- Mustang Images (3 members)
- Mustang Omega Images (16 members)
- Mustang series (5 members)
- MuyMuy (6 members)
- MuyMuy images (1 member)
- NDB-Series Repeater images (1 member)
- NV-TAC (15 members)
- Named Vehicles (0 members)
- Named civilian vessels (17 members)
- Named vessels (7 members)
- Natural (18 members)
- Natural Satellite (0 members)
- Natural satellite (12 members)
- Nautilus images (32 members)
- Nav-E7 Gadgets (1 member)
- Navplate Images (48 members)
- Navplates (23 members)
- Navy Surplus (7 members)
- Nebulae (1 member)
- NemesisChiken Images (8 members)
- Nemo Drone images (1 member)