PK7 is a data archive file associated with Zdoom computer game. Zdoom is a port of the popular FPS computer game Doom, released on various platforms. PK7 files use 7-Zip compression algorithm.

PK7 files store such game resources as graphics, music, maps, character models, etc. They can also contains patches or mods. PK7 files are required to run Zdoom on Microsoft Windows, Linux, or Mac OS systems. Zdoom project has been released under GPL public license and is still actively developed.