拆除（英语：Demolition），又称解体、拆毁，将建筑物或其他设施进行分解的过程。它跟解构不同，在建筑上，解构通常是将建筑物或设备仔细的进行分解，目的是保留其中原件的价值，希望将来的重新利用。但是拆除只是快速将原有建物加以破坏，以方便开发。

因现代的钢筋水泥的建筑物有一定的强度，再加上建物大多都有一定的规模，因此拆除费以及事后的清理费用是一笔可观的数目，因此很多废弃大楼的拥有者宁愿降价出售也不愿意拆除。

Demolition is the tearing-down of buildings and other structures. Demolition contrasts with deconstruction, which involves taking a building apart while carefully preserving valuable elements for re-use.

For small buildings, such as houses, that are only two or three stories high, demolition is a rather simple process. The building is pulled down either manually or mechanically using large hydraulic equipment: elevated work platforms, cranes, excavators or bulldozers. Larger buildings may require the use of a wrecking ball, a heavy weight on a cable that is swung by a crane into the side of the buildings. Wrecking balls are especially effective against masonry, but are less easily controlled and often less efficient than other methods. Newer methods may use rotational hydraulic shears and silenced rock-breakers attached to excavators to cut or break through wood, steel, and concrete. The use of shears is especially common when flame cutting would be dangerous.