H11, H-11 or H 11 may refer to :

• H-11 (Michigan county highway)
• British NVC community H11, a type of heath community in the British National Vegetation Classification
• Heathkit H-11, a OEM version of the LSI-11/03 PDP-11 computer
• Highway H11 (Ukraine), a road in Ukraine
• HMS Basilisk (H11), a 1930 British Royal Navy B class destroyer
• HMS Racehorse (H11), a 1942 British Royal Navy R class destroyer
• HMS H11, a 1915 British Royal Navy H class submarine
• London Buses route H11, a Transport for London contracted bus route
• Sanguiin H 11, a type of tannin

and also :

• H11Z hurricane tie, a device used to make a structure more resistant to high winds
• Other disorders of conjunctiva in diseases classified elsewhere ICD-10 code

This disambiguation page lists articles associated with the same title formed as a letter-number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article.