MML
- Extensible Markup Language
- Faculty of Medieval and Modern Languages, University of Oxford
- Haze (video game)
- MML (language)
- MML Capital Partners
- Maskew Miller Longman
- Material Measurement Laboratory
- Mega Man
- Mega Man Legends
- Metropolitan Municipality of Lima
- Michigan Municipal League
- Middlesbrough Music Live
- Midland Line (disambiguation)
- Midland Main Line
- Midland Mainline (train operating company)
- Milli Muslim League
- Minimum Message Length
- Modeling Maturity Level
- Multi-Mission Launcher
- Mumble (software)
- Music Macro Language
- Music Markup Language
- MyMathLab
- Myeloid/lymphoid or mixed-lineage leukemia
- Roman numerals
- Southwest Minnesota Regional Airport
- University of Cambridge
- University of Manchester