MLD
- Air Moldova
- Auditory masking
- Dutch Naval Aviation Service
- EU Money Laundering Directive
- List of aperiodic sets of tiles
- Maldives
- Maniac Latin Disciples
- Manual lymphatic drainage
- Mean log deviation
- Metachromatic leukodystrophy
- Miluo East railway station
- Mixed layer
- Monolingual learner's dictionary
- Moreland railway station
- Multicast Listener Discovery
- Special needs