绿色建筑或绿建筑（英语：Green Building），系指本身及其使用过程在生命周期中，如选址、设计、建设、营运、维护、翻新、拆除等各阶段皆达成环境友善与资源有效运用的一种建筑。换言之，绿色建筑在设计上试图从人造建筑与自然环境之间取得一个平衡点。这需要设计团队、建筑师、工程师以及客户在专案的各阶段中紧密合作。而绿色建筑的实作扩充并补足古典建筑设计对于经济效益、实用性、耐用度以及舒适度方面的不足。

相近观念为自然建筑，是指正常用于较小的比例，并偏向集中于使用当地所可取用的材料。其他常见的用词包括了永续设计及绿色建筑物。

Green building (also known as green construction or sustainable building) refers to both a structure and the using of processes that are environmentally responsible and resource-efficient throughout a building's life-cycle: from siting to design, construction, operation, maintenance, renovation, and demolition. In other words, green building design involves finding the balance between homebuilding and the sustainable environment. This requires close cooperation of the design team, the architects, the engineers, and the client at all project stages. The Green Building practice expands and complements the classical building design concerns of economy, utility, durability, and comfort.