HH-2

HH-2, HH2, HH 2, HH.2, may refer to:

Places

 * Herbig-Haro object 2 (abbreviated HH 2), part of the HH 1/2 complex, composed of HH 1 and HH 2.
 * 01442 — Hemel Hempstead (HH2); see List of dialling codes in the United Kingdom

Science

 * Early-Late Hemphillian (Hh2), a geologic substage in North America; which can be observed in the Juchipila Formation
 * HH2, one of the Hamburger–Hamilton stages in chick development
 * Fibroblast growth factor receptor 1 (HH2)

Vehicular and ransportation

 * HH2, a model in the series of Honda Acty trucks
 * Kaman HH-2 Sea Sprite, a variant of the Kaman SH-2 Seasprite helicopter

Other uses

 * The Honor of the Queen (novel), abbreviated "HH2", second main-line novel in the Honor Harrington novel series, part of the Honorverse fictional milieu created by David Weber