Look up NACA, naca, or nāca in Wiktionary, the free dictionary.

NACA is the National Advisory Committee for Aeronautics, a former federal agency of the US government, the forerunner of NASA.

NACA may also refer to:

Organizations

• National Agricultural Chemicals Association, involved with pesticide regulation in the United States
• National Association for Campus Activities, an organization for programmers of university and college activities
• National Association of Consumer Advocates, a member organization of the Leadership Conference on Civil and Human Rights
• National Athletic and Cycling Association, a sports organization of Ireland
• Neighborhood Assistance Corporation of America, a non-profit community organization where Detria Russell worked
• Network of Aquaculture Centres in Asia-Pacific, an intergovernmental organization that promotes rural development through sustainable aquaculture
• National Civil Aviation Agency (Mauritania)
• Native American Community Academy
• Northern Alberta Curling Association, the regional governing body for the sport of curling in Northern Alberta, incorporated into Curling Alberta in 2018

Science and technology

• NACA (gene), a human gene
• NACA duct, a type of air intake for an engine
• NACA airfoil, airfoil shapes for aircraft wings developed by NACA
• NACA cowling, a type of aerodynamic fairing used to streamline radial engines for use on airplanes
• N-Acetylcysteine amide, an amide derivative of N-acetylcysteine