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National Oil Corporation
The National Oil Corporation (NOC; Arabic: المؤسسة الوطنية للنفط) is Libya's state-owned national oil company, created in 1970 to manage its oil and gas resources through subsidiaries and joint ventures.
National Palace (Mexico)
The National Palace (Spanish: Palacio Nacional) is the government building on the Zócalo in Mexico City serving as the seat of Mexico's executive branch and the president's official workplace.
National Petroleum and Natural Gas Pipeline Network Group
The National Petroleum and Natural Gas Pipeline Network Group (国家石油天然气管网集团有限公司), commonly known as PipeChina, is a Chinese state-owned company that owns and operates the country's major oil and gas pipelines.
National Pipe Network Group North Pipeline
National Pipe Network Group North Pipeline Co., Ltd. (国家管网集团北方管道有限责任公司) is a Chinese state-owned pipeline company in Langfang, Hebei, a PipeChina subsidiary running about 25,000 km of oil and gas pipelines.
National Pipe Network Group Southwest Oil and Gas Pipeline
National Pipe Network Group Southwest Oil and Gas Pipeline is a PipeChina subsidiary operating the trunk oil and gas pipelines of Sichuan, Chongqing, and Guizhou.
National pipe thread
National pipe thread (NPT), also called Briggs pipe thread, is the American standard taper pipe thread defined in ASME B1.20.1, sealing pipe joints by metal-to-metal wedging on a 1-in-16 taper, normally with a thread sealant.
National Pollutant Discharge Elimination System
The National Pollutant Discharge Elimination System (NPDES) is the permit program created by the 1972 Clean Water Act that regulates point sources discharging pollutants into US waters.
National Private Pilot Licence
The National Private Pilot Licence (NPPL) is a United Kingdom national flight crew license, issued under the Air Navigation Order 2016, permitting private, non-commercial flying of light aircraft within UK airspace.
National Rail
National Rail is the brand and customer information service for passenger rail in England, Scotland and Wales, providing journey planning, fares, and real-time information via its website and apps.
National Railway Locomotive Engineers' Union (動労)
Dōrō (動労), formally the National Railway Motive Power Union, was a militant Japanese union of JNR locomotive crews, founded in 1951 and dissolved in 1987.
National Railway Museum
The National Railway Museum, also known as York Railway Museum, is a railway museum in York, England, opened in 1975 and home to Mallard and Flying Scotsman.
National Recording Registry
The National Recording Registry is a Library of Congress list of sound recordings deemed culturally, historically, or aesthetically significant, with 25 recordings added each year under the 2000 preservation act.
National Register of Citizens
The National Register of Citizens (NRC) is the register of Indian citizens for Assam, first compiled in 1951 and updated in 2019 under Supreme Court supervision.
National Registration Identity Card
The National Registration Identity Card, or NRIC, is the compulsory identity card issued to Singapore citizens and permanent residents, who register at 15 and re-register at 30 and 55.
National Relay Service
The National Relay Service is a free Australian government phone service for Deaf, hard of hearing, and speech-impaired people, with Relay Officers converting voice, text, and Auslan since 1995.
National Research Council Institute for Ocean Technology
The National Research Council Institute for Ocean Technology (IOT) was an ocean engineering research institute of Canada's National Research Council in St. John's, Newfoundland, opened in 1985.
National Research Universal
The National Research Universal (NRU) was a 135 MWt, heavy-water research reactor at Chalk River, Ontario, in service from 1957 to 2018 and a leading world source of medical isotopes.
National Road
The National Road, also called the Cumberland Road, was the first US highway built entirely with federal funds, running from Cumberland, Maryland, west to Vandalia, Illinois.
National Roads Authority (Ireland)
The National Roads Authority (Irish: An tÚdarás um Bóithre Náisiúnta) was Ireland's independent statutory body for national roads, established in 1994 and known as Transport Infrastructure Ireland since 2015.
National Robotics Engineering Center
The National Robotics Engineering Center is a Carnegie Mellon University organization that designs and tests robots for industry and government, opened in Pittsburgh in 1996.
National Robotics Initiative
The National Robotics Initiative was a United States multi-agency research funding program, launched in 2011, that supported research on robots working cooperatively with people until 2022.
National Robotics Strategy (Australia)
The National Robotics Strategy is the Australian Government's plan for developing and using robotics and automation, released by the Department of Industry, Science and Resources on 28 May 2024.
National Rural Letter Carriers' Association
The National Rural Letter Carriers' Association (NRLCA) is the labor union representing rural letter carriers of the United States Postal Service, organized in Chicago in 1903 and today representing more than 130,000 carriers.
National Scenic Byway
A National Scenic Byway is a US road designated by the Secretary of Transportation under the 1991 National Scenic Byways Program for one of six intrinsic qualities.
National Security Authority (Norway)
The National Security Authority (Nasjonal sikkerhetsmyndighet, NSM) is Norway's government directorate for preventive security, established in 2003, supervising civilian and military sectors under the Security Act.
National Security Space Launch
National Security Space Launch (NSSL), formerly the Evolved Expendable Launch Vehicle program, is the US Department of Defense program buying launches for military and intelligence satellites.
National Semiconductor
National Semiconductor was an American semiconductor manufacturer, reestablished in Santa Clara, California, in 1967, known for analog and mixed-signal chips and acquired by Texas Instruments in 2011 for about $6.5 billion.
National Shooting Sports Foundation
The National Shooting Sports Foundation is the American firearms industry's trade association, chartered in 1961 and based in Shelton, Connecticut. It owns the SHOT Show and runs the Project ChildSafe safety program.
National Soaring Museum
The National Soaring Museum is an aviation museum on Harris Hill in Elmira, New York, preserving the history of motorless flight and administering the United States Soaring Hall of Fame.
National Society for the Preservation of Covered Bridges
The National Society for the Preservation of Covered Bridges is an American nonprofit, chartered in Massachusetts in 1954, that preserves covered bridges and publishes the World Guide to Covered Bridges.