A road roller (sometimes called a roller-compactor, or just roller) is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. Similar rollers are used also at landfills or in agriculture.

Road roller operators work with equipment to compact a variety of materials, such as soil, gravel, concrete or asphalt, in the construction of roads and foundations. They walk behind, or sit on top of the road roller, depending on the type and size, and roll over the area to be compacted.