Electrospray ionization, a technique used for mass spectrometry
European Software Institute, a non-profit foundation launched as an initiative of the European Commission, with the support of the Basque Government and leading European companies working in the Information Technology field

SAP may stand for:

Standard Assessment Procedure (SAP), a method system for measuring the energy rating of residential dwellings used in the UK.
Ramn Villeda Morales International Airport, located in San Pedro Sula, Honduras (IATA code is SAP)
Serum amyloid P component, the identical serum form of Amyloid P component (AP)
Santa Paula, California (Amtrak station code: SAP)
Second audio program, an auxiliary audio channel for television that can be broadcast or transmitted both over the air and by cable TV
Single Assessment Process, a UK government initiative to achieve common professional practice and recording between UK social care and health practitioners dealing with the same patien ...more