在计算机科学里，静态库（英语：Static library, Statically-linked library），或称静态函式库，是一个外部函式与变量的集合体。静态函式库的文件内容，通常包含一堆程序员自定的变量与函式，其内容不像动态链接库那么复杂，在编译期间由编译器与链接器将它集成至应用程序内，并制作成目的档以及可以独立运作的运行档。而这个运行档与编译运行档的进程，都是一种程序的静态创建（static build）。以过去的观点来说，函式库只能算是静态（static）类型。

In computer science, a static library or statically-linked library is a set of routines, external functions and variables which are resolved in a caller at compile-time and copied into a target application by a compiler, linker, or binder, producing an object file and a stand-alone executable. This executable and the process of compiling it are both known as a static build of the program. Historically, libraries could only be static. Static libraries are either merged with other static libraries and object files during building/linking to form a single executable, or they may be loaded at run-time into the address space of the loaded executable at a static memory offset determined at compile-time/link-time.