Perf
# Perf

Perf or PERF may refer to:

* Perf (Lahn), a river in Germany
* perf (Linux), a performance analyzing tool in Linux
* Perf de Castro (Perfecto de Castro), Filipino musician
* Perfect (grammar), a glossing abbreviation used in linguistics
* Police Executive Research Forum, a US national membership organization
* A perforation
   * Film perforations
* "Perf", a single recorded by singer and social media personality Baby Ariel
