上層建築或上層結構、上部結構、附加結構、超結構（英語：Superstructure）指的是在現有結構的基準上向上擴展的結構[1]。該術語適用於各種物理結構，如建築物，橋樑或工程學自由度為零的船舶等。
示例圖冊
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圖中這艘船中標示爲1和9的是這艘船的上層結構
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參看
參考資料
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