AH

• Albert Heijn a Dutch supermarket chain owned by Ahold.

AH may mean:

• Anno Hegirae a Latinization of Hijri year.
• After hours stock trading.
• an abbreviation of the historical genre Alternate history
• Alaska Highway
• Authentication Header, a part of the IPsec protocol suite
• Avalon Hill, makers of military-themed board games
• Air Handler, Often abbreviated to AHU, is a device used to condition and circulate air

Ah may mean:

• ampere-hour, a unit of electric charge
• An onomatopoeia for the sound made when one realizes something.

In certain spiritual traditions AH may mean:

• Is the first sound made when evoking the sound Aum of the Omkara signification.

aH may mean:

• attohenry, an SI unit of inductance

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