HH6 or HH-6 may refer to:
Honor Among Enemies, the sixth novel in the Honor Harrington series by David Weber, abbreviated HH6 Fibroblast growth factor 8 (HH6) HH6, one of the Hamburger–Hamilton stages in chick development FWD HH6, an interwar U.S. military truck; see list of military trucks HH6, a model in the series of Honda Acty trucks
See also
H6 (disambiguation)