PBX

PBX may refer to:

• Pakubuwono X, the tenth Susuhunan of Surakarta in Java, Indonesia
• Polymer-bonded explosive
• Pre-B-cell leukemia homeobox
• Private branch exchange, a telephone exchange that serves a particular business or office
• PBX Funicular Intaglio Zone, a 2012 album by John Frusciante
• PBX, a rewrite of the Project Builder IDE