ISP

ISP may mean:

Internet service provider, an organization that offers users access to the Internet and related services.
Information Systems Professional, an Information Technology title and post-nominal. Proper usage is "I.S.P.".
In-System Programming, a way to configure programmable logic devices while they are installed in a larger system.
Islip/Long Island MacArthur Airport, ISP being the IATA Airport Code for it.
Independent Solutions Provider, provides solutions associated with a product or a final service to the client.
Specific impulse, represented by I_sp, term used to describe rocket thrust.
Illinois State Police, Law enforcement agencies across Illinois.
The Invisibl Skratch Piklz, a pioneering group of turntable artists in the early 1990s that featured notable DJs such as Mix Master Mike and DJ Q-bert.
International School of Paris, A multicultural school situated a couple minutes away from the Eiffel Tower.