NVLAP(National Voluntary Laboratory Accreditation Program) 美國實驗室認證組織是由美國官方根據聯邦法典CFR，授權由NIST(United States Department of Commerce National Institute of Standards and Technology) 管理的、負責測試與校準實驗室認可工作的國家實驗室認可機構。其依據ISO/IEC17025標準對實驗室進行認可。
在美國現在已有超過800個測試和校正實驗室通過NVLAP（National Voluntary Laboratory Accreditation Program）認可，NVLAP是NIST下的一個獨立運作組織，NVLAP是依據ISO/IEC 17025、NIST Handbook 150及部份技術規範所成立的。
目前NVLAP認可的校正領域有：
-Dimensional
-Electromagnetics-DC/Low Frequency
-Electromagnetics-RF/Microwave
-Ionizing Radiation、Mechanical
-Optical Radiation
-Thermodynamics
-Time and Frequency 。
NVLAP認可的測試領域有：
Electromagnetic Compatibility and Telecommunications
- Environmental
-Asbestos Fiber Analysis (PLM Test Method)
- Fasteners and Metals
- Homeland Security Applications
-Biometrics Testing
-Radiation Detection Instruments
Information Technology Security Testing
-Common Criteria Testing
-Cryptographic and Security Testing
- Ionizing Radiation Dosimetry
- Personal Body Armor
- Voting System Testing
Product Testing
-Acoustical Testing Services
-Carpet and Carpet Cushion
-Commercial Products Testing
-Construction Materials Testing
-Efficiency of Electric Motors
-Energy Efficient Lighting Products
-Thermal Insulation
-Wood Based Products