国家航空咨询委员会（National Advisory Committee for Aeronautics，NACA）是于1915年3月3日成立的美国联邦政府机构，负责航空科学研究的运行、促进与制度化。由于进入太空竞赛时代，美国联邦政府于1958年10月1日解散NACA，并将其设备、资产与人员转移至新创立的国家航空暨太空总署。NACA的读音是字母单独发音，而不是首字母缩略字的发音方式。

NACA的名字在汽车界与航空界仍然很常见，例如汽车的进气导管有称为NACA duct（导管）的，或是飞机上常用的NACA翼型、NACA cowling（整流罩）等仍被用于新设计上。

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915, to undertake, promote, and institutionalize aeronautical research. On October 1, 1958, the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA). NACA was pronounced as discrete letters, rather than as a whole word (and after NASA first came into being, it too was pronounced as discrete letters).