Abraham de Moivre (26 May 1667 in Vitry-le-François, Champagne, France – 27 November 1754 in London, England; French pronunciation: [abʁaam də mwavʁ]) was a French mathematician famous for de Moivre's formula, which links complex numbers and trigonometry, and for his work on the normal distribution and probability theory. He was a friend of Isaac Newton, Edmund Halley, and James Stirling. Among his fellow Huguenot exiles in England, he was a colleague of the editor and translator Pierre des Maizeaux.

De Moivre wrote a book on probability theory, The Doctrine of Chances, said to have been prized by gamblers. De Moivre first discovered Binet's formula, the closed-form expression for Fibonacci numbers linking the nth power of φ to the nth Fibonacci number.

Abraham de Moivre was born in Vitry in Champagne on May 26, 1667. His father, Daniel de Moivre, was a surgeon who, though middle class, believed in the value of education. Though Abraham de Moivre's parents were Protestant, he first attended Christian Brothers' Catholic school in Vitry, which was unusually tolerant given religious tensions in France at the time. When he was eleven, his parents sent him to the Protestant Academy at Sedan, where he spent four years studying Greek under Jacques du Rondel. The Protestant Academy of Sedan had been founded in 1579 at the initiative of Françoise de Bourbon, widow of Henri-Robert de la Marck; in 1682 the Protestant Academy at Sedan was suppressed and de Moivre enrolled to study logic at Saumur for two years. Although mathematics was not part of his course work, de Moivre read several mathematical works on his own including Elements de mathematiques by Father Prestet and a short treatise on games of chance, De Ratiociniis in Ludo Aleae, by Christiaan Huygens. In 1684 he moved to Paris to study physics and for the first time had formal mathematics training with private lessons from Jacques Ozanam.

Abraham (Hebrew:  אַבְרָהָם (help·info), Modern: Avraham, Tiberian: ʼAḇrāhām, Ashkenazi Avrohom or Avruhom, Arabic: إبراهيم‎ Ibrāhīm, Ge'ez: አብርሃም ʼAbrəham, Greek: Aβραάμ, Russian: Авраам), whose birth name was Abram, is the eponym of the Abrahamic religions, among which are Judaism, Christianity and Islam. According to both the Hebrew Bible and the Qur'an, through his sons Ishmael and Isaac, Abraham is the forefather of many tribes, namely the Ishmaelites, Israelites, Midianites and Edomites. Abraham was a descendant of Noah's son, Shem. Christians believe that Jesus was a descendant of Abraham through Isaac, and Muslims believe that Muhammad was a descendant of Abraham through Ishmael. Abraham is notable for his advocation and promotion of monotheism.

The Book of Genesis narrative that records the life of Abraham presents his role as one that could only be fulfilled through a monotheistic covenant established between him and God. The Qur'an has stories about Abraham and his offspring that are similar to the Bible's. In Islam, Abraham is recognised as a prophet, patriarch and messenger, archetype of the perfect Muslim, and reformer of the Kaaba.