| Acronym | Definition |
|---|
| MMO➣Massively Multiplayer Online (gaming) |
| MMO➣Mystic Moods Orchestra |
| MMO➣Make Money Online (Internet marketing) |
| MMO➣Music Minus One |
| MMO➣Multi Media Object |
| MMO➣Massively Multiplayer Online |
| MMO➣Mobile Module |
| MMO➣Marvel Mystery Oil (Turtle Wax, Inc.) |
| MMO➣Mercury Magnetospheric Orbiter |
| MMO➣Mixed Metal Oxide |
| MMO➣Makine Muhendisler Odasi (Turkish: Chamber of Mechanical Engineers) |
| MMO➣Multimodal Optimization |
| MMO➣Materials and Manufacturing Ontario |
| MMO➣Minimum Municipal Obligation (municipal pension funds) |
| MMO➣Milwaukee Mandolin Orchestra (Milwaukee, WI) |
| MMO➣Maximum Operating Mach Number |
| MMO➣Marketing Mix Optimization |
| MMO➣Multimedia Object |
| MMO➣Means, Motive and Opportunity |
| MMO➣Maintenance Management Officer |
| MMO➣Mach Max Operating (aviation) |
| MMO➣Man-Made Object |
| MMO➣Multiple Male Orgasm |
| MMO➣Multimedia Outlet |
| MMO➣Miscellaneous Material Order |
| MMO➣Modifications, Maintenance and Operations |
| MMO➣Marine Mammals Observers |
| MMO➣Main Mechanical Outfitting |
| MMO➣Mars Mining Operations (Dark Orbit game) |
| MMO➣Marching Men of Ohio |
| MMO➣Motorcycle Museum Online |
| MMO➣Modem Managed Object |
| MMO➣Minor Maintenance Order |
| MMO➣Mission Operation Management Organization |
| MMO➣Maintenance Material Officer |
| MMO➣Maximum Magnitude of the OCC (Odd Crosscorrelation) |
| MMO➣Magnetic Method of Orientation (directional drilling compass type) |
| MMO➣Mixed Mode Optimal (voting algorithm) |
| MMO➣Mobility Movement Order |
| MMO➣MIPR Management Office |
| MMO➣Maintenance Manual Organization Level (TMINS) |
| MMO➣Maden Mühendisleri Odasý |