What are three different types of map grid systems?

Three different types of map grid systems include the Universal Transverse Mercator (UTM), which divides the world into a series of zones for precise location referencing; the Geographic Coordinate System (GCS), which uses latitude and longitude to define positions on the Earth's surface; and the Military Grid Reference System (MGRS), which combines the UTM and a grid reference for tactical military applications. Each system serves specific purposes and is used in various fields such as navigation, surveying, and military operations.