XAF is a three-letter abbreviation with multiple meanings, as described below:
- The ISO4217 Currency Code for the Central African CFA franc
- The Bizana, Eastern Cape vehicle registration plates code
- The ICAO Code for Executive Air Fleet, United States
- The abbreviation for XIAP-associated factor
- The abbreviation for Developer Express' eXpressApp Framework
- The abbreviation for Extreme Architecture Framework, an instance of Enterprise Architecture Framework
- XAF Radar, an experimental pre-WWII U.S. Navy radar