The Jewish Encyclopedia gives some statistics on conversion of Jews to Protestantism, to Roman Catholicism, and to Orthodox Christianity (which it calls erroneously Greek Catholicism; Greek or Byzantine Catholics are under the See of Rome, not in the Orthodox Church). Some 2,000 European Jews converted to Christianity every year during the 19th century, but in the 1890s the number was running closer to 3,000 per year—1,000 in Austria Hungary (Galizian Poland), 1,000 in Russia (Poland, Belarus, Ukraine, and Lithuania), 500 in Germany (Posen), and the remainder in the English world.
The 19th century saw at least 250,000 Jews convert to Christianity according to existing records of various societies. Data from the Pew Research Center that as of 2013, about 1.6 million adult American Jews identify themselves as Christians, most are Protestant. According to same data most of the Jews who identify themselves as some sort of Christian (1.6 million) were raised as Jews or are Jews by ancestry. According to 2012 study 17% of Jews in Russia identify themselves as Christians.
Paul the Apostle – early Christian leader and author of many New Testament epistles.
Abd-al-Masih (martyr) – a convert martyred for his faith
Michael Solomon Alexander – first Anglican Bishop of Jerusalem
Petrus Alphonsi – physician in ordinary to King Alfonso VI of Castile
Juan Alfonso de Baena – medieval Castilian troubadour
John von Neumann - Was a Hungarian-American pure and applied mathematician, physicist, inventor, computer scientist, and polymath. He was baptized a Catholic in 1930.
Lise Meitner - Was an Austrian physicist who worked on radioactivity and nuclear physics. She converted to Christianity, following Lutheranism, and was baptized in 1908.
Lovisa Augusti – opera singer and actress.
Eduard Bendemann – German painter
Sir Julius Benedict – English composer
Leo de Benedicto Christiano – medieval financier
Theodor Benfey – German philologist
David Berkowitz – American serial killer
Michael Bernays – German professor of literature
Gottfried Bernhardy – German philologist and literary historian
Ludwig Börne – German political writer and satirist
John Braham – English tenor opera star
Moritz Wilhelm August Breidenbach – German jurist
Julius Friedrich Cohnheim – German pathologist
Isaac da Costa – Dutch language poet
Abraham Capadose – Dutch physician and writer; friend of Isaac da Costa
Carl Paul Caspari – Norwegian theologian
Jehuda Cresques – Catalan cartographer
Nathanael Kapner
Ferdinand David – German virtuoso violinist and composer
Ludwig Dessoir – German actor
Benjamin Disraeli – British Prime Minister and leader of the Conservative Party in the 19th century
Alfred Döblin – German expressionist novelist
Bob Dylan – popular musician who converted to Christianity in 1979. He later began studying with Chabad, a branch of Hasidic Judaism, though his current religious affiliation is uncertain. See also information on Dylan's Conversion to Christianity, Born-again period and Religious beliefs.
Alfred Edersheim – Biblical scholar
Rachel Felix – French-Swiss theatre actress
Pero Ferrús – Castilian poet
Achille Fould – French financier and politician
Jacob Frank – 18th century Jewish reformer
The Reverend Canon Dr Giles Fraser – Christian minister and former Canon Chancellor of St Paul's Cathedral
Heinrich von Friedberg – German jurist and statesman
Ludwig Friedländer – German philologist
Eduard Gans – German philosopher and jurist, exponent of the conservative Right Hegelians
Hermann Mayer Salomon Goldschmidt – German astronomer and painter
Fritz Haber – German chemist and Nobel laureate in Chemistry
Karl Landsteiner – Austrian biologist and physician, In 1930 he received the Nobel Prize in Physiology or Medicine. converted from Judaism to Roman Catholicism in 1890
Gerty Cori – Czech-American biochemist who became the third woman—and first American woman—to win a Nobel Prize in science, and the first woman to be awarded the Nobel Prize in Physiology or Medicine.
Max Born – German physicist and mathematician, he won the 1954 Nobel Prize in Physics.
Boris Pasternak – Russian poet, novelist, and literary translator. He was awarded the Nobel Prize for Literature in 1958. He Converts to Eastern Orthodoxy from Judaism
Heinrich Heine – German writer
Friedrich Gustav Jakob Henle – German physician, pathologist and anatomist
Jorge Isaacs – Colombian writer, politician and soldier
Heinrich Jacoby – German educator
Georg Jellinek – German legal philosopher
Paul S. L. Johnson – American scholar and pastor
David Kalisch – German playwright and humorist
Felix Philipp Kanitz – Austro-Hungarian naturalist, geographer, ethnographer, archaeologist and author of travel notes
Andrew Klavan – filmmaker and novelist
Leopold Kronecker – German mathematician and logician
Hermann Lebert – German physician
Karl Lehrs – German classical scholar
Osip Mikhailovich Lerner – 19th century Russian intellectual and lawyer
Fanny Lewald – German author
Tsaritsa Theodora of Bulgaria – wife of tsar Ivan Alexander, tsaritsa in the late Second Bulgarian Empire
Jean-Marie Lustiger – Cardinal, former Archbishop of Paris
Heinrich Gustav Magnus – German chemist and physicist
Ludwig Immanuel Magnus – German mathematician
Gustav Mahler – composer (1860–1911)
Alexander Men – Russian priest, Orthodox theologian and author (assassinated 1990)
Hugh Montefiore – Anglican Bishop of Birmingham from 1977 to 1987
Robert Moses – politician and "master builder" of 20th century New York City
Felix Mendelssohn – composer (1809–1847)
Karl Friedrich Neumann – German orientalist
Robert Novak – raised in secular Jewish culture, he converted to Catholicism in May 1998 after his prolific career as a journalist, columnist, and political commentator.
Harry Frederick Oppenheimer – South African businessman
Francis Palgrave – English historian
Corey Pavin – PGA golfer
Johannes Pfefferkorn – German theologian and writer
Friedrich Adolf Philippi – German Lutheran theologian
Howard Phillips – prominent American conservative leader and former presidential candidate
Lorenzo Da Ponte – Italian librettist
Harry Reems – adult film actor.
David Ricardo – English political economist
Gillian Rose – British philosopher and sociologist
Moishe Rosen – founder of Jews for Jesus
Anton Rubinstein – Russian pianist, composer, and conductor
Joseph Schereschewsky – Episcopal Bishop of Shanghai, founder of Saint John's University, Shanghai, bible translator
Eduard von Simson – German jurist and politician
Dan Spitz – lead guitarist of the heavy metal band Anthrax
Friedrich Julius Stahl – Prussian jurist and conservative thinker
Edith Stein – nun, martyr, saint
Siegbert Tarrasch – challenger for the World Chess Championship
Mordechai Vanunu – considered a whistle-blower on Israel's nuclear programme who was subsequently kidnapped, tried and imprisoned by Israel.
Rahel Varnhagen (born Rahel Levin) – writer and saloniste
Simone Weil – French philosopher and activist
Otto Weininger – Austrian philosopher
Joseph Wolff – German missionary
Sir Moses Ximenes – 18th century English merchant
David Levy Yulee – United States Senator from Florida
Efrem Zimbalist, Jr. – American actor
Israel Zolli – former Chief Rabbi of Rome
Shia LaBeouf – Hollywood actor who decided to leave Judaism and become a Christian while playing a Christian character in the movie Fury (2014). He had previously contributed to a book entitled I am Jewish in 2004.
Jacob Frank – 18th-century Jewish religious leader who claimed to be the reincarnation of the self-proclaimed messiah Sabbatai Zevi. He later converted to Christianity in Poland in 1759.
Marcel Dassault - Was a French aircraft industrialist. He converted to Roman Catholicism in 1950.
Paul Reuter - Was a German entrepreneur, and the founder of Reuters News Agency. On 16 November 1845, he converted to Christianity, in a ceremony at St. George's German Lutheran Chapel in London.
Boris Berezovsky - Was a Russian business oligarch, government official, engineer and mathematician. converted to the Eastern Orthodox Church in 1990.
Luis Ramírez de Lucena - Was a Spanish chess player who published the first still-existing chess book. He is from a family of Jews who converted to Roman Catholicism.
Dennis Gabor - Was a Hungarian-British electrical engineer and physicist, he later received the 1971 Nobel Prize in Physics. In 1918, he and his family converted to Lutheranism.
Eugene Wigner - was a Hungarian American theoretical physicist and mathematician. He received half of the Nobel Prize in Physics in 1963. He and his family converted to Lutheranism.
Abram Ioffe - was a prominent Russian/Soviet physicist. In 1911 he converted to Lutheranism.
Abraham Abramson - was a Prussian coiner and medallist. Born into a Jewish family, he later converted to Christianity.
Felix Aderca - was a Romanian novelist, playwright, poet, journalist and critic, noted as a representative of rebellious modernism in the context of Romanian literature.
Mortimer J. Adler - was an American philosopher, educator, and popular author. He was a convert to Catholicism.
Michael Balint - was a Hungarian psychoanalyst who spent most of his adult life in England. He was a proponent of the Object Relations school.
David Baron - was a Jewish convert to Christianity. He began the Hebrew Christian Testimony to Israel missionary organization.
Rachel Beer - was an Indian-born British newspaper editor. She was editor-in-chief of The Observer and The Sunday Times. She converted to Christianity.
Bo Belinsky - was an American left-handed pitcher in Major League Baseball.
Marianne Beth - was a Jewish Austrian lawyer and feminist. She converted from Judaism to Protestantism.
Károly Csemegi - was a Hungarian judge who was instrumental in the creation of the first criminal code of Hungary. Though born Jewish, he later converted to Christianity.
Michael Coren - is a British-Canadian columnist, author, public speaker, radio host and television talk show host. He converted to Roman Catholicism in his early twenties.
Daniel Chwolson - was a Russian-Jewish orientalist. He embraced Christianity later.
Mendel Diness - was a Jewish watchmaker in 19th century Jerusalem. Diness later converted to Christianity.
Peter Engel - is an American television producer who is best known for his teenage sitcoms which appeared on TNBC, he was raised Jewish, and has converted to Christianity.
Ferdinand David - was a German virtuoso violinist and composer. He was raised Jewish but later converted to Christianity.
Hans Feibusch - was a German painter and sculptor of Jewish heritage, He converted to Christianity and was baptized and confirmed into the Church of England in 1965.
Ilya Fondaminsky - was a Jewish Russian author (writing under the pseudonym Bunakov) and political activist,, he adopted Christianity and was christened a Russian Orthodox.
Charles L. Feinberg - was an American biblical scholar and professor of Semitics and Old Testament. In 1930, he converted from Judaism to Christianity through the ministry of Chosen People Ministries.
Wilhelm Frankl - was a World War I fighter ace credited with 20 aerial victories. he converted to Christianity.
Julius Friedländer - was a German numismatist, Friedländer's entire family embraced Christianity in 1820.
Ludwig Friedländer - was a German philologist. He later converted to Protestantism.
