《伍采克》（Wozzeck）是阿尔班·贝尔格第一部也是最出名的一部歌剧。

歌剧根据德国剧作家格奥尔格·毕希纳未完成的作品《伍采克》写成的。贝尔格将它改编为三幕歌剧，每幕由五个场组成。

贝尔格于1917年动笔，这时的他刚从第一次世界大战中退役。歌剧完成于1922年。埃里希·克莱伯在1925年12月4日柏林国家歌剧院指挥了歌剧的世界首演。

伍采克是无调性音乐的最佳典范之一。无调性的音乐很好的深化了主题，特别是用于表现疏远以及疯癫的变化。贝尔格深得老师阿诺·勋伯格的遗髓，甚至试图将人物的情感搬到舞台上以展现其变化。他的音乐的确成功的描述了这些东西，不单上面提到的两样东西，就是爱情和人性，以及伍采克与其他普通人一度，为了尊严而作的斗争都被他的音乐包容到了。贝尔格对市井生活的细致观察，使得他能够驾轻就熟地真实反映市民的日常生活。（酒店一场—玛丽房间内外）

Wozzeck (German pronunciation:[ˈvɔtsɛk]) is the first opera by the Austrian composer Alban Berg. A typical performance of the work takes slightly over an hour and a half. It was composed between 1914 and 1922 and first performed in 1925. The opera is based on the drama Woyzeck, which was left incomplete by the German playwright Georg Büchner at his death. Berg attended the first production in Vienna of Büchner's play on 5 May 1914, and knew at once that he wanted to base an opera on it. From the fragments of unordered scenes left by Büchner, Berg selected fifteen to form a compact structure of three acts with five scenes each. He adapted the libretto himself, retaining "the essential character of the play, with its many short scenes, its abrupt and sometimes brutal language, and its stark, if haunted, realism..."