NIA

NIA or Nia may refer to:

• Nia (album), a music album by Blackalicious
• Nia (fitness), a type of aerobic exercise
• Nia (fungus), a genus of marine fungi
• SS Nia, a French steamship in service 1952-54
• Nia, a principle of Kwanzaa from the Swahili for purpose/intent.
• Nanotechnology Industries Association, an international association of nanotechnology companies
• National Indoor Arena, an indoor arena in Birmingham, England, United Kingdom
• National Institute of Accountants, the former name until 2011 for the Institute of Public Accountants in Australia
• National Institute of Aerospace, an aerospace research institute in the United States
• National Institute on Aging, a health research institute in the United States
• National Institute of Ayurveda, apex training and research institute in Ayurveda in India
• National Insurance Academy (NIA Pune), an insurance educational institute in India
• National Intelligence Agency (Nigeria), a governmental intelligence agency in Nigeria
• National Intelligence Agency (South Africa), a governmental intelligence agency in South Africa
• National Investigation Agency, the counter-terrorism agency in India
• National Iraqi Alliance, a Shi'a Islamist electoral coalition in Iraq
• Net income attributable, a concept in the United States tax code related to Individual Retirement Accounts
• Neural Impulse Actuator, a peripheral for gaming on Windows computers
• Nigerian Institute of Architects, a professional association in Nigeria
• Nimba Airport's IATA code in Nimba, Liberia
• Northern Ireland Assembly, the legislature of Northern Ireland