韦伯分布（Weibull distribution），又称韦氏分布或威布尔分布，是可靠性分析和寿命检验的理论基础。

1. 1927年，Fréchet (1927)首先给出这一分布的定义。

2. 1933年，Rosin和Rammler在研究碎末的分布时，第一次应用了韦伯分布（Rosin, P.; Rammler, E. (1933), "The Laws Governing the Fineness of Powdered Coal", Journal of the Institute of Fuel 7: 29 - 36.）。

In probability theory and statistics, the Weibull distribution /ˈveɪbʊl/ is a continuous probability distribution. It is named after Swedish mathematician Waloddi Weibull, who described it in detail in 1951, although it was first identified by Fréchet (1927) and first applied by Rosin & Rammler (1933) to describe a particle size distribution.