斯蒂芬·米歇尔·莱奇（英语：Stephen Michael Reich，(英语发音：/ˈraɪʃ/，1936年10月3日－），是犹太裔美国简约主义古典音乐作曲家。但更常用的名字是斯蒂夫·莱奇。

要留意的是他的姓氏读法，‘ei’应以德语的读法－即应读作/aɪ/（英语字母i）而不是/eɪ/，而‘ch’，官方的读法（以至最近乐谱出版社Boosey & Hawkes在网上制作一系列有关庆祝作曲家75岁生日的片段）是/ʃ/（如英语的sh），然而也有部份人－特别是美国人，会依德语的读法，读成/h/，两者均可。但却不是/tʃ/或空音。部份华语用户的翻译其实不太准确。

Stephen Michael Reich (/ˈraɪʃ/; born October 3, 1936) is an American composer who, along with La Monte Young, Terry Riley, and Philip Glass, pioneered minimal music in the mid to late 1960s.

Reich's style of composition influenced many composers and groups. His innovations include using tape loops to create phasing patterns (for example, his early compositions It's Gonna Rain and Come Out), and the use of simple, audible processes to explore musical concepts (for instance, Pendulum Music and Four Organs). These compositions, marked by their use of repetitive figures, slow harmonic rhythm and canons, have significantly influenced contemporary music, especially in the US. Reich's work took on a darker character in the 1980s with the introduction of historical themes as well as themes from his Jewish heritage, notably the Grammy Award-winning Different Trains.