4F or 4-F may refer to: *

4F (company) 4F is a Polish clothing company established in 2003 and headquartered in Wieliczka, in southern Poland. The company is owned by OTCF S.A. whose other subsidiary, subsidiaries include brands like Outhorn and 4Faces. It offers sports, tourism and ca ...

, a Polish sportswear company * 4-F classification in the U.S. Selective Service System, identifying a person as unfit for military service * 4F correlator, in

Fourier optics Fourier optics is the study of classical optics using Fourier transforms (FTs), in which the waveform being considered is regarded as made up of a combination, or '' superposition'', of plane waves. It has some parallels to the Huygens–Fresnel pr ...

* The 4f

electron shell In chemistry and atomic physics, an electron shell may be thought of as an orbit that electrons follow around an atom's nucleus. The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (o ...

* Section 4(f) of the United States DOT act of 1966, which regulates acquiring park and historic properties for transportation use. *

4F case The 4F case concerns the events of 4 February 2006 in Barcelona, in which a policeman patrolling outside a rave was paralyzed after being hit by a falling object and nine people were arrested in consequence. At a trial two years later, seven p ...

, a 4 February 2006 controversial criminal case in Barcelona *

Flottille 4F Flotille 4F (abbreviated to 4F) is a French Aeronavale aircraft squadron based at Base Aéronavale de Lann Bihoué and equipped with three Northrop Grumman E-2C Hawkeye aircraft, these aircraft are operated from the aircraft carrier ''Charles ...

a French naval aviation squadron *

LMS Fowler Class 4F The London, Midland and Scottish Railway (LMS) Fowler Class 4F is a class of 0-6-0 steam locomotive designed for medium freight work. They represent the ultimate development of the Midland Railway's six-coupled tender engines. Many Trainspotter ...

, a class of 0-6-0 steam locomotive *

February 1992 Venezuelan coup d'état attempt The Venezuelan coup attempt of February 1992 was an attempt to seize control of the government of Venezuela by the Hugo Chávez-led Revolutionary Bolivarian Movement-200 (MBR-200) that took place on 4 February 1992.Uppsala Conflict Data Progra ...

, known in Venezuela as "4F".

See also