| Acronym | Definition |
|---|
| M2K➣Music-to-Knowledge (programming environment; International Music Information Retrieval Systems Evaluation Laboratory) |
| M2K➣Mew2King (gaming, Super Smash Bros) |
| M2K➣Mobility 2000 (USAF Air Mobility Command C4I modernization program) |
| M2K➣Masquerade 2000 (UK) |
| M2K➣Multiple Integrated Laser Engagement System (MILES) 2000 |
| M2K➣Mega Team Fortress 2000 (game) |