2H or 2-H may refer to:

• 2H lead, a type of lead in a pencil
• 2H, a type of Toyota H engine
• Douglas O-2H, a model of Douglas O-2
• Chaparral 2H, one model of Chaparral Cars
• Aptera 2h, a model in the Aptera 2 Series
• SSH 2H (WA), alternate designation for Washington State Route 290
• 2H, a disgnation for chemicals with two hydrogen molecules
• 2H-pyran, a form of Pyran
• 2H-1-benzopyran, a form of Benzopyran
• 2H-pyran-2-one, a form of 2-Pyrone

See also

• H2 (disambiguation)

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