A mine countermeasures vessel or MCMV is a type of naval ship designed for the location of and destruction of naval mines which combines the role of a minesweeper and minehunter in one hull. The term MCMV is also applied collectively to minehunters and minesweepers.

Most modern MCMVs are designed to locate, identify, and neutralize or remove underwater mines. Any explosive device that is placed in or near water to damage or destroy ships, submarines, or other naval vessels is classified as a mine. They can pose a significant threat to naval operations, maritime trade, and coastal security.

The primary purpose of a MCMV is to ensure safe passage for friendly naval and commercial vessels by clearing waterways, harbors, and shipping lanes of potential mine hazards. These vessels use various specialized technologies and techniques to accomplish their mission:

These vessels are typically equipped with advanced navigation, communication, and data processing systems to effectively carry out their mission. They often have a dedicated crew of mine warfare specialists, explosive ordnance disposal experts, and naval engineers who work together to ensure safe maritime operations. They play a critical role in maintaining maritime security by locating, identifying, and neutralizing underwater mines, thereby ensuring safe passage for naval and commercial vessels in potentially hazardous waters.