H13, H-13 or H.13 may refer to:
Roads H-13 (Michigan county highway), a road in the United States Highway H13 (Ukraine)
Vehicles Bell H-13 Sioux, an American helicopter , a H-class submarine ordered by but not commissioned into the Royal Navy Lioré et Olivier LeO H-13, a French flying boat LSWR H13 class, a British steam railcar
Other uses DIN 1.2344 tool steel, a tool steel grade London Buses route H13, a public transportation route in England A class of high-efficiency particulate air filter