XAU
XAU stands for:
- Authentication protocol for the X Window System
- Saul airport in French Guiana ( IATA code )
- Called short name in ISO 4217, the price of a troy ounce ( = 31.1034768 grams) of gold
- Short name in ISO 639-3 for language Kauwera Papua in Indonesia
- Philadelphia Gold and Silver Index, a stock index of the NASDAQ OMX PHLX (formerly Philadelphia Stock Exchange)
- Developed XAU Limited, a UK company, the business management software
- Disambiguation
- Abbreviation