AL, Al or al may stand for:

• Alabama, a state in the United States (postal abbreviation: AL)
• Alagoas, a state in Brazil
• Albania, a country in Europe
• Allen County, Kansas, United States
• Province of Alessandria, a province of Italy in the ISO 3166-2:IT code
• AL postcode area, St Albans, England
• Arab League, a regional organization of 22 Arab states
• Al, Iran, a village in Razavi Khorasan Province, Iran

.al is the Internet country code top-level domain (ccTLD) for Albania. It is administered by the Electronic and Postal Communications Authority of Albania (AKEP). As of May 1, 2013, anyone can register a .al domain.

The suffix -al is the IUPAC nomenclature used in organic chemistry to form names of aldehydes containing the -(CO)H group. It was extracted from the word "aldehyde".

Ål is a municipality in Buskerud county, Norway. It is part of the traditional region of Hallingdal. The administrative centre of the municipality is the village of Ål.

(, also transliterated as el- as pronounced in varieties of Arabic) is the definite article in the Arabic language; a particle () whose function is to render the noun on which it is prefixed definite. For example, the word "book" can be made definite by prefixing it with al-, resulting in "the book". Consequently, al- is typically translated as in English.