the National Priorities List;

the New Programming language - the original name of the PL/I by IBM in 1964

an abbreviation for non-patent literature used before the United States Patent and Trademark Office (USPTO).

the National Physical Laboratory, India;

the National Puzzlers' League;

the Non-Partisan League

the National Physical Laboratory, UK;

the Netscape Public License;

the NPL functional programming language by Rod Burstall and John Darlington in 1977

a nuclear pumped laser

a Non Performing Loan (Financial Theory)

the Nonprocedural language by T.D. Truitt et al in 1980

the IATA airport code for New Plymouth Airport, on the west coast of New Zealand's North Island;

the Nauru Pacific Line, located in Nauru;

the Namibia Premier League (in Namibian soccer);

the Nigerian Premier League in Nigerian soccer

the Northern Premier League (in English soccer);

the Norwegian Premier League (in Norwegian soccer);

IBM's New Product Line, a highly influential range of computers released in 1964, including the IBM System/360.

The NORD Programming Language - an internal systems language used at Norsk Data