2H

2H or 2-H may refer to:

==Chemistry== Deuterium, or {{chem2|^{2}H}}, an isotope of hydrogen 2H, a designation 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