MHW
MHW stands for:
- Marine heatwave
- Medical Disaster Relief Organization Germany , an association of private rescue service companies, in order to be able to specifically fall back on their resources in the event of a disaster
- Mean high tide , see tides #Ebbe and high tide
- Waste heating plant , see waste incineration
- Müritz-Havel-Wasserstraße , federal waterway in Mecklenburg-Western Pomerania
- Monteagudo Airport (IATA code), Bolivian airport
