MBD
- Man bites dog (journalism)
- Marchiafava–Bignami disease
- Maxwell–Boltzmann distribution
- Member Board of Directors
- Metabolic bone disease
- Methyl-CpG-binding domain protein 2
- Microsoft
- Model-based definition
- Model-based design
- Mordechai Ben David
- Motherboard
- Multibody dynamics
- Murder by Death (band)
- My Brightest Diamond