AB, Ab, or ab may refer to:
ABBA (Swedish pronunciation: [²abːa]) are a Swedish pop group, formed in Stockholm in 1972 by Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad.
Abortion is the ending of pregnancy due to removing an embryo or fetus before it can survive outside the uterus.
Abu Dhabi (US: , UK: ; Arabic: أبو ظبي Abū Ẓabī [ɐˈbuˈðˤɑbi]) is the capital and the second most populous city of the United Arab Emirates (the most populous being Dubai), and also capital of the Emirate of Abu Dhabi, the largest of the UAE's seven emirates.
The Abrahamic religions, also referred to collectively as Abrahamism, are a group of Semitic-originated religious communities of faith that claim descent from the practices of the ancient Israelites and the worship of the God of Abraham.
Absinthe (; French: [apsɛ̃t]) is historically described as a distilled, highly alcoholic (45–74% ABV / 90–148 U.S.
During the war in Iraq that began in March 2003, personnel of the United States Army and the Central Intelligence Agency committed a series of human rights violations against detainees in the Abu Ghraib prison in Iraq.
The Abbasid Caliphate ( or Arabic: ٱلْخِلافَةُ ٱلْعَبَّاسِيَّة, al-Khilāfatu al-ʿAbbāsiyyah) was the third of the Islamic caliphates to succeed the Islamic prophet Muhammad.
Abkhazia (Abkhazian: Аҧсны́ Apsny [apʰsˈnɨ]; Georgian: აფხაზეთი Apkhazeti [ɑpʰxɑzɛtʰi]; Russian: Абха́зия, tr.