A landfill site (also known as a tip, dump, rubbish dump, garbage dump or dumping ground is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the waste is a modern development. In the past, refuse was simply left in piles or thrown into pits.

Some landfill sites are also used for waste management purposes, such as temporary storage, consolidation and transfer, or for various stages of processing waste material, such as sorting, treatment, or recycling. Unless they are stabilized, landfills may experience severe shaking or soil liquefaction of the ground during a large earthquake.