Hertzian may refer to:
Hertzian antenna Hertzian cone, the cone produced when an object passes through a solid, such as a bullet through glass Hertzian contact stress, localized stresses that develop as two curved surfaces come in contact and deform slightly under imposed loads Hertzian dipole, defined as a finite oscillating current over an infinitesimal length at a specified position Hertzian wave, the original name of radio waves Hertzian wave telegraphy