A military vehicle is any vehicle for land-based military transport and activity, including combat vehicles, both specifically designed for or significantly used by military. Most military vehicles require off-road capabilities and/or vehicle armor, making them heavy. Some have vehicle tracks instead of just wheels; half-tracks have both. Furthermore, some military vehicles are amphibious, constructed for use on land and water, and sometimes also intermediate surfaces.

Military vehicles are almost always camouflaged, or at least painted in inconspicuous color(s). In contrast, under the Geneva Conventions, all non-combatant military vehicles, such as military ambulances and mobile first aid stations, must be properly and clearly marked as such. Under the conventions, when respected, such vehicles are legally immune from deliberate attack by all combatants.

Historically, militaries explored the use of commercial off-the-shelf (COTS) vehicles, both to gain experience with commercially available products and technology, and to try to save time in development, and money in procurement. A subtype that has become increasingly prominent since the late 20th century is the improvised fighting vehicle, often seen in irregular warfare.