National Defense Industrial Association
| Abbreviation | NDIA | 
|---|---|
| Formation | 1919 | 
| Type | Voluntary Association | 
| Headquarters | Arlington, Virginia | 
| Location | |
| Membership | Corporate, Individual, Small Business, and Life | 
| President and CEO | David Norquist | 
| Affiliations | Association For Enterprise Integration (AFEI) National Training and Simulation Association (NTSA) Precision Strike Association (PSA) Women in Defense (WID) | 
| Staff | 75 | 
| Website | NDIA.org | 
The National Defense Industrial Association (NDIA) is a trade association for the United States government and defense industrial base. It is an 501(c)(3) educational organization. Its headquarters are in Arlington, Virginia. NDIA was established in 1919 as a result of the inability of the defense industry to scale up the war effort during World War I.