国际数学及统计进程库数字库（英文：International Mathematics and Statistics Library Numerical Libraries）是一个商业的软件库，用做电脑编程语言中如C语言、Java、.Net和Fortran中的数值分析功能的库。

IMSL (International Mathematics and Statistics Library) is a commercial collection of software libraries of numerical analysis functionality that are implemented in the computer programming languages of C, Java, C#.NET, and Fortran. A Python interface is also available.