4H may refer to:
- 4-H, a youth organization administered by the USDA
- Curtiss JN-4H, an American biplane
- 4H, a Washington, D.C. Metrobus route, in the United States
- 4H-pyran
- 4H-SiC, one of the polymorphs of silicon carbide
- Hydrogen-4 (H, or quadrium), an isotope of hydrogen
- 4H, IATA code for United Airways, a Bangladeshi airline
- 4H disease, an early name for AIDS since the syndrome seemed to affect heroin users, homosexuals, hemophiliacs, and Haitians
- 4H, the production code for the 1975 Doctor Who serial Planet of Evil
See also
Topics referred to by the same termThis disambiguation page lists articles associated with the same title formed as a letter–number combination.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: