- XAP stands for Silverlight Application Package (software file extension)
- XAP stands for X-Associated Protein
- XAP stands for Merchant Cargo Ship (US Navy)
- XAP stands for Xerox Alliance Partner (business relationship)
- XAP stands for X Application Panel
- XAP stands for Radio Communications Team (US Navy)
- XAP stands for X Activation Peptide (biochemistry)
- XAP stands for Experimental Aerial Platforms
XAP