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