AB, Ab, or ab may refer to:
Abraham Lincoln (/ˈeɪbrəhæm ˈlɪŋkən/; February 12, 1809 – April 15, 1865) was an American politician and lawyer who served as the 16th President of the United States from March 1861 until his assassination in April 1865. Lincoln led the United States through its Civil War—its bloodiest war and perhaps its greatest moral, constitutional, and political crisis.
Abortion is the ending of pregnancy by removing a fetus or embryo before it can survive outside the uterus.
Abdullah II bin Al-Hussein (Arabic: عبد الله الثاني بن الحسين, ʿAbdullāh aṯ-ṯānī ibn Al-Ḥusayn; born 30 January 1962) has been King of Jordan since 1999 upon the death of his father King Hussein.
The Abbasid Caliphate (/əˈbæsᵻd/ or /ˈæbəsᵻd/ Arabic: الخلافة العباسية al-Khilāfah al-‘Abbāsīyah) was the third of the Islamic caliphates to succeed the Islamic prophet Muhammad.
Abrahamic religions, emphasizing and tracing their common origin to the tribal patriarch Abraham or recognizing a spiritual tradition identified with him, are one of the major divisions in comparative religion (along with Indian, Iranian, and East Asian religions).
Absinthe (/ˈæbsɪnθ/ or /ˈæbsænθ/; French: [apsɛ̃t]) is historically described as a distilled, highly alcoholic (45–74% ABV / 90–148 U.S.
ABBA (stylised ᗅᗺᗷᗅ; Swedish pronunciation: [²abːa]) were a Swedish pop group formed in Stockholm by Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad.
Abū Bakr al-Baghdadi (Arabic: أبو بكر البغدادي; born 28 July 1971 as Ibrahim Awad Ibrahim al-Badri إبراهيم عواد إبراهيم علي محمد البدري السامرائي) is the leader of the Sunni militant terrorist organisation known as the Islamic State of Iraq and the Levant, which controls territory in western Iraq, Syria, Libya and Afghanistan.
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.