MCL
MCL stands for:
- MCL Bremen , a multi-purpose freighter sailing under the flag of Antigua and Barbuda
 - most comfortable level , see discomfort threshold
 - Mantle cell lymphoma (to English mantle cell lymphoma )
 - Materials Center Leoben
 - Ligamentum collaterale mediale, the inner collateral ligament in the knee joint
 - Medioclavicular line; see sagittal plane
 - Mediterranea-Calabro-Lucane , a former railway company in Italy
 - Monte Carlo localization (also known as particle filter or sequential Monte Carlo method ), a localization method in robotics
 - McKinley National Park Airport (IATA code), McKinley Park Airport (Alaska) , Alaska
 - Medical Aviation Services (ICAO code), British airline
 
MCL stands for:
- Master of Comparative Law , an academic degree; see list of academic degrees (Germany) # Non-consecutive and advanced master degrees
 
mcl stands for:
- Macaguaje (ISO-639-3 code), extinct Tucano language in Colombia