H13

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
 * HMS H13, 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