The abbreviation, acronym, or initialism SAP has several different meanings:

• SAP Aktiengesellschaft, a software company, or its various products such as SAP R/3 or SAP BW
• second audio program (television)
• Session Announcement Protocol
• Soritong audio player
• Structural Adjustment Program
• Standard Accounting Program, a program on which some large businesses run their accounting.
• Service Advertising Protocol
• Special access program - Secret clandestine operations program, run by secret governmental agency
• Socialdemokratiska arbetareparti (Social Democratic Workers' Party ).