Federal Project Number One was the collective name for a group of projects under the Work Projects Administration, a New Deal program in the United States. The five elements of the program were:
- Federal Writers' Project (FWP)
- Historical Records Survey (HRS, originally part of the FWP)
- Federal Theatre Project (FTP)
- Federal Music Project (FMP)
- Federal Art Project (FAP)
It was part of Franklin Delano Roosevelt's Second New Deal, and was the largest of its projects.