National Federation of State High School Associations
| Abbreviation | NFHS | 
|---|---|
| Formation | 1920 | 
| Type | 501(c)(3) - Tax Exempt | 
| Legal status | Association | 
| Purpose | Athletic/Educational | 
| Headquarters | 690 W. Washington St. Indianapolis, Indiana, U.S.  | 
| Location | 
  | 
Region served   | United States | 
| Membership | 18,500+ high schools | 
Official language   | English | 
Executive Director  | Dr. Karissa Niehoff | 
| Staff | 40 | 
| Website | nfhs.org | 
The National Federation of State High School Associations (NFHS) is the body that writes the rules of competition for most high school sports and activities in the United States. NFHS's headquarters are located in White River State Park in Indianapolis, Indiana.